Biology Middle School
Answers
Answer 1
second option
Explanation:
cuzzzzzzzz jusssss dooooo ittttt thank me laterrrrrr
Related Questions
The town of Manaus recently built an artificial body of water, this reservoir will store drinking water for the town. Which of the following could cause contamination of the water and lead to human health problems of
the townspeople?
A. Development of a water quality plan
B. Building a fence around the reservoir
C. Improvements to a water treatment facility
D. Increased use of fertilizer to keep vegetation growing
Answers
D. because the fertilizer could eventually become a problem
Answer:
The answer is D.
Explanation:
:)
Susan B.Anthony's early life about 30 words please hurry!!!!!or more doesn't matter i don't need it anymore
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Answer:
He was born in Adams in Massachusetts on 15 February 1820. Second oldest of eight children, only five of the Anthony's siblings lived as adults to a local owner of the cotton mill and his wife. One baby was dead and the other died at the age of two.
Explanation:
He was born at Adams, Massachusetts, on February 15, 1820. Just five of Anthony's siblings were adults, the second oldest of eight to a local cotton mill owner and his father. There was one child dead and another one died at two years of age.
Anthony grew up and developed a strong moral compass early in a Quaker household, spending a good deal of her life working on social issues. The Anthony family moved to New York in 1826, Battenville. Anthony was sent to study near Philadelphia at a Quaker College.
Anthony returned home after the company of her father in the late 1830s to help her family succeed. As a teacher she found work. Throughout the mid-1840s, the Anthonys move to a farm in the city of Rochester, New York.
At which type of tectonic plate boundary is a volcano least likely to occur? O
A. A, B, and C are equally unlikely.
OB. A
O c. c
O D. B
Answers
Answer:
Answer is B: transform faults .
Explanation:
Which of the following is a type of pollution measured in the Everglades
Answers
The Everglades are plagued by nutrient pollution, encroaching development, invasive animals like Burmese pythons, and exotic vegetation like Brazilian pepper and Australian pine.
What pollution measured in the Everglades?
Extremely high amounts of mercury contamination can be found in Everglades National Park and the South Florida area around it. In order to evaluate mercury cycling in the ecosystem and build-up in sediments, fish, and other species in the park, the NPS undertakes research.
High phosphorus has an effect on the Everglades, causing the disappearance of natural communities of algae that are one of the Everglades' defining traits. Depletion of fish-needed dissolved oxygen in the water. Alterations in the native plant communities that led to the disappearance of the open water habitats used by wading birds.
Therefore, Fertilizer run off is a type of pollution measured in the Everglades.
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Genetically engineered pork has a higher flesh–to–bone ratio. Which of the following sentences explains how pork is genetically engineered
Answers
"The desired gene is inserted into the genomes of the pork" sentences explains how pork is genetically engineered.
Explanation:
The sequencing of the pig genome represents a significant tool for further development of this essential animal species, and our discovery of many putative disease-causing variants increases the pig's potential as a biomedical model.
If all the genes in the pork's genome are altered the cells would not make the appropriate proteins and they could die. Plasmids are trash DNA and no function will be done. In addition, plasmids are found in bacteria, not in the eukaryotic cells.
Sustainable use is often defined as the use of natural resources at a rate that meets the needs of the present human population but which also allows future generations to use the resource to meet their needs. Which of these BEST illustrates the concept of
sustainable use?
Crops are rotated in a farmers field to maximize grain yields.
A fishing trawler use a large net to catch a school of small fish.
A logging company reseeds and replants in a forested area after cutting
down trees for timber.
Coal is mined using underground tunnels to avoid the destruction of
surface soils by strip mining.
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Answer:
The answer is a logging company replanting seeds
Explanation:
Because that way the future generations will have trees
What causes the Pacific Ring of Fire to have so many volcanoes?
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Answer:
The amount of movement of tectonic plates causes the Pacific Ring of Fire to have so many volcanoes.
Explanation:
The ring of volcanoes that is present around the Pacific Ocean which is formed due to the subduction of oceanic plates that lies beneath the lighter continental plates.This region contains most of the volcanoes because of the of the larger part of the subduction zone of the earth .
The plate that is present underneath is pushed down, or subducted by the plate above. As rock is subducted, it melts and becomes magma. The abundance of magma so near to Earth’s surface gives rise to conditions ripe for volcanic activity.
Why does active transport require energy to move molecules of a substance across a cell membrane? OA
The cell membrane is very thick.
Lack of the substance makes the cell weak.
ООО
The substance moves from high to low concentration, with the concentration gradient.
OD
The substance moves from low to high concentration, against the concentration gradient.
Answers
Answer:
The substance moves from low to high concentration, against the concentration gradient.
Explanation:
When molecules move from high to low concentration, it is known as Diffusion. It moves with the concentration gradient and does not require energy.
However, when molecules move from low to high concentration, it is against the concentration gradient and cannot proceed without Energy. This process is called Active transport.
Cell membrane is not thick, it is thin and semi permeable.
The reason why active transport require energy to move molecules of a substance across a cell membrane is because: D. The substance moves from low to high concentration, against the concentration gradient.
Active transport refers to the movement of ions or molecules of a substance from a region of lower concentration to a region of higher concentration, across a cell membrane and against a concentration gradient. Thus, active transport require cellular energy to move molecules from a region of lower concentration to a region of higher concentration across a cell membrane and against the concentration gradient.
In conclusion, active transport generally require cellular energy to move molecules of a substance across a cell membrane because they are moved from low to high concentration region, against the concentration gradient.
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Explain the relationship between heredity and traits.
Answers
Answer:
the relationship between traits and heredity. Traits are individual forms of characteristics in a population. Heredity is the passing of these traits from parent to offspring.
Explanation:
What term is used when the concentrations of solutes inside and outside a cell are in equilibrium? А
polytonic
B
hypotonic
isotonic
hypertonic
Answers
Isotonic solutions is the term used when the concentrations of solutes inside and outside a cell are in equilibrium.
Explanation:
The isotonic solution is one which have same osmotic pressure on either side of the semi-permeable membrane.
In the isotonic solution there will be free movement of only water molecules and not solutes.
isotonic solution is the solution when two solutions have equal solute concentration.
The concentration of the solution will be in equilibrium.
Scientist think that all of life on earth originated from which type of organism? stromatolites
single-cell eukaryotes
single-cell prokaryotes
multicell animals
Answers
Answer: Single-cell prokaryotes
Explanation: all of life on earth originated from Single-cell prokaryotes
Based on the diagram, what conclusion can you make about the growth and development of a ladybug? A.
A metamorphosis occurs during the life cycle.
B.
The larva looks like the adult ladybug.
C.
Ladybugs have simple life cycles.
D.
Ladybugs reproduce at many life stages.
Answers
Answer:
A) The growth and development of a ladybug depends on metamorphosis that occurs during the life cycle.
Explanation:
The life cycle of the ladybug starts from the egg. The woman ladybug lays a cluster of five to 30 eggs once she has matted. She normally places her eggs on a plant with the right prey for her descendants to consume as they hunt. A single female ladybug can produce more than 1000 eggs in a three months span beginning in spring or early summer.
Researchers agree that cockroaches lay both fertile and infertile cluster eggs. The freshly slurred larvae feed on the infertile eggs while aphids are in a small supply.
Answer:
a
Explanation:
Match each process to where it occurs in the carbon cycle.
Answers
Answer: Going clockwise the correct answers are:
ingestion, decomposition, fossilization, combustion
Explanation: just took test
Answer:
Explanation:
1.
the series of processes by which carbon compounds are interconverted in the environment, involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.
Which is a lymphocyte? O
A. Oxygen
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HT
T
LES
ET
HOTLLEREERSTE
EST
O
B. Hydrochloric acid
O
C. T cell
O
D. Neutrophil
Answers
The answer would be T cells
How does bioluminescence work?
Answers
Bioluminescence occurs through a chemical reaction that produces light energy within an organism's body. For a reaction to occur, a species must contain luciferin, a molecule that, when it reacts with oxygen, produces light. ... Many organisms also produce the catalyst luciferase, which helps to speed up the reaction
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Question 7Multiple Choice Worth 3 points) (06.02 LC)
Which of the following statements is not a description of Jupiter?
known for its red spot
Largest planet in the solar system
One of the rocky planets
Has several moons
Answers
One of the rocky planets is not a description
Answer: Jupiter is not one of the rocky plants, so the answer is C.
Explanation:
What is the difference between a mechanical layer and a compositional layer? EARTH SCIENCE PLZ
Answers
The difference between a mechanical layer and a compositional layer is compositional layers are determined by components, but a mechanical layer is determined by its physical properties.
What is a mechanical or compositional layer?
The mechanical layers of the earth are Lithosphere, Asthenosphere, Mesosphere, Outer Core, and Inner Core. They are of different strengths and rigidity. The compositional layer is the oceanic crust and continental crust.
The earth is made up of different layers. These layers are of different compositions and functions. These layers composed the earth and all factors.
Thus, a mechanical layer is different from a compositional layer in that a compositional layer is determined by its components, but a mechanical layer is determined by its physical characteristics.
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Compositional layers are determined by their components, while mechanical layers are determined by their physical properties.
Please Answer!!!?! Which of the following describes a genotype?
A. The number of chromosomes an organism possesses. B. The number of traits an organism has. C. An observable product of an organism's genetic makeup. D. The genes contained in an organisms genetic makeup.
Answers
Answer: D. The genes contained in an organisms genetic makeup.
Explanation: Genotype is the genetic makeup of an organism. Every trait in living organisms is controlled by a pair of gene, the genes for the trait is called genotype. These genes can be dominant or recessive. Traits such as height, skin colour, tongue rolling, eye colour, blood type are controlled by at least a pair of gene. Genes that control height such as TT, Tt and tt are the genotypes for height. Gene for brown eye B and gene for blue eye b can occur in pair either in a homozygous or heterozygous state as BB, Bb and bb. These pairs of genes are the genotypes.
56:19 Carlos is heading a student council project to improve cafeteria meals. He surveyed all students who eat cafeteria lunches to
find out which of the five weekly cafeteria options they like least. What steps should Carlos take to best display this data?
Answers
Answer:
rrfcfvkkkkg
Explanation:
It's a sweltering 40 degrees Celsius. What is the speed of sound?
Answers
nnExplanation:
rrhggfsfdgg
FAQs
What Is The Relationship Between The Salinity And Density Of Ocean Water? A Decrease In Salinity Increases? ›
The density of water increases as the salinity increases. The density of seawater (salinity greater than 24.7) increases as temperature decreases at all temperatures above the freezing point.
What is the correlation between salinity and density? ›Salinity and density share a positive relationship. As density increases, the amount of salts in the water—also known as salinity, increases. Various events can contribute to change in the density of seawater. Salinity can decrease from the melting of polar ice or increase from the freezing of polar ice.
What causes salinity to increase and decrease in the ocean? ›Evaporation of ocean water and formation of sea ice both increase the salinity of the ocean. However these "salinity raising" factors are continually counterbalanced by processes that decrease salinity such as the continuous input of fresh water from rivers, precipitation of rain and snow, and melting of ice.
How does density and salinity affect water? ›High salinity makes water denser. This is because there is more salt packed into the water. High temperature makes water less dense. As water gets warmer, its molecules spread out, so it becomes less dense.
What are the effects of changing salinity on the density of ocean water? ›The density of seawater increases with increasing salinity, and the salt content of seawater simultaneously alters the relationship between temperature and density. Salt also depresses the freezing point of seawater and may inhibit sea ice formation in salty oceans (Fofonoff & Millard, 1983).
Which of the following shows the relationship between the salinity and density of water? ›What is the relationship between salinity and density? The salinity of seawater increases as the density increases.
What happens when ocean salinity increases? ›Increasing ocean salinity results in warming, particularly at high latitudes (Figure 1), and reduced sea ice in all three of our model configurations (Figure 2). Decreasing ocean salinity has the opposite effect, decreasing surface temperature on global average and increasing the extent of sea ice.
What decreases as salinity increases? ›As salinity increases, dissolved oxygen exponentially decreases. This is why saltwater holds 20% less dissolved oxygen than freshwater.
What causes a decrease of salinity in water? ›Near the equator, the tropics receive the most rain on a consistent basis. As a result, the fresh water falling into the ocean helps decrease the salinity of the surface water in that region. As one move toward the poles, the region of rain decreases and with less rain and more sunshine, evaporation increases.
Why does do decrease when salinity increases? ›Water also holds less dissolved oxygen at higher elevations because there is less pressure. Solubility of dissolved oxygen also decreases as salinity increases. Dissolved oxygen refers to the amount of oxygen contained in water. Oxygen has limited solubility in water usually ranging from 6-14 mg/L.
What causes ocean water to become denser? ›
The water molecules pack together tighter as pressure increases -the pressure increase with depth, due to the weight of the water above, and causes the greatest density changes in seawater with depth (greater than the density changes due to temperature and salinity changes).
Which two changes would increase the density of ocean water? ›The density of seawater can be increased by reducing its temperature, increasing its salinity , or increasing the pressure.
Which is more dense salty water or less salty water? ›Salt water is more dense than fresh water
Salt water has more stuff in it than fresh water. That stuff would be the salt, which makes the mass of water greater, without adding much to its volume. Density = mass/volume. Increasing the mass by adding salt increases the density.
The density of water increases as the salinity increases. The density of seawater (salinity greater than 24.7) increases as temperature decreases at all temperatures above the freezing point.
What are the factors affecting the salinity of the ocean? ›The salinity of water in the surface layer of oceans depend mainly on evaporation and precipitation. Surface salinity is greatly influenced in coastal regions by the freshwater flow from rivers, and in polar regions by the processes of freezing and thawing of ice.
What affects water density more salinity or temperature? ›Temperature has a greater effect on the density of water than salinity does.
Is the relationship between temperature salinity and density linear? ›The density of seawater depends on its salinity and temperature. Cold water is denser than warm fresh water is lighter than saline water. The relationship between S, T and density is complicated, but for small changes in salinity and temperature the relationship is approximately linear.
Does density decrease as temperature increases True or false? ›There is a decrease in density of a gas when increase in the temperature because the intermolecular space between the gas molecules is increased as a result volume increases and density decreases.
How are density salinity and temperature related in each layer of ocean water? ›As temperature increases, the density of water decreases, so colder layers of water sink below warmer layers. 3. As salinity increases, the density of water increases so saltier water layers sink below less salty layers.
Does increasing salinity increase or decrease density? ›Salt has a density of 2.16 gcm3 2.16 g cm 3 and when more salt is dissolved in ocean water the salinity increases, and it adds to the density of the ocean water. This means that there is more mass for the same amount of volume of water.
What happens when ocean density changes? ›
As the seawater gets saltier, its density increases, and it starts to sink. Surface water is pulled in to replace the sinking water, which in turn eventually becomes cold and salty enough to sink. This initiates the deep-ocean currents driving the global conveyer belt.
Which of the following would cause a decrease of salinity? ›Processes that decrease seawater salinity include evaporation and sea ice formation.
What causes the salinity of ocean water to decrease quizlet? ›rain, snow, melting ice, and fresh water from rivers lower the salinity of ocean water.
What is the density and salinity of seawater? ›The density of surface seawater ranges from about 1020 to 1029 kg/m3, depending on the temperature and salinity. At a temperature of 25 °C, the salinity of 35 g/kg and 1 atm pressure, the density of seawater is 1023.6 kg/m3.
Does salinity decrease with depth? ›Salinity is lowest at the surface, and decreases with depth. Both temperature and salinity are high at the surface, and decrease with depth.
Does rain increase or decrease salinity? ›Where more rain or snow falls over the ocean, it dilutes the salts in the seawater there. As a result, the water becomes fresher with time. If seawater becomes saltier, it may mean that rates of evaporation have increased or that precipitation has decreased over time.
What causes ocean water to decrease in density? ›The density of seawater depends on temperature and salinity. Higher temperatures decrease the density of seawater, while higher salinity increases the density of seawater.
What are the two main factors that affect ocean water density? ›Sea water has characteristic properties (e.g. density) that are independent of sample size. There are two main factors that make ocean water more or less dense: temperature and salinity. Cold, salty water is denser than warm, fresher water and will sink below the less dense layer.
How do you increase the density of water? ›Adding salt to water makes the water denser. As the salt dissolves in the water, it adds mass (more weight to the water). This makes the water denser and allows more objects to float on the surface that would sink in fresh water.
Why is cold salty water more dense than warm salty water? ›The temperature and amount of salt in water determines its density. Cold, salty Page 3 water has more mass per volume, therefore greater density, and will sink to the bottom.
Why does salt water have a higher density than fresh water? ›
Salt water is heavier (more dense) than fresh water (because of the salt dissolved in the water) so things have different buoyancies in the different types of water. Density is weight per volume, or how much “stuff” something is made of.
Why is salt solution more dense than water? ›Salt water is more dense than pure water because the salt in it contributes to the mass of the entire solution. Given equal parts salt water and pure water, the salt water will be more massive; therefore, salt water is more dense than pure water.
What is the relationship between salinity and density quizlet? ›Salinity and density share a positive relationship. As density increases, the amount of salts in the water—also known as salinity, increases.
Why does density decrease when volume increases? ›Key Concepts. Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density.
What happens to the density of a fluid as it temperature increases decreases? ›As the temperature increases, volumes of most of the liquids also increases and when the volume increases density decreases. Similarly, when temperature decreases, the volume of most liquids decreases which increases the density.
What two factors affect the salinity of ocean water quizlet? ›What two factors affect salinity? Latitude and depth. How does latitude affect seawater salinity? The salinity of seawater is determined by how much freshwater enters the ocean in the form of precipitation, melting sea ice, and runoff from rivers, and how much exits through evaporation.
What are some factors that impact the salinity quizlet? ›Precipitation decreases salinity. Evaporation increases salinity. Flow of freshwater (rivers) into ocean. Freezing increases salinity. Melting decreases salinity.
What are the causes of salinity? ›Causes of irrigation salinity
Irrigation salinity occurs due to increased rates of leakage and groundwater recharge causing the watertable to rise. Rising watertables can bring salts into the plant root zone which affects both plant growth and soil structure.
Density and Temperature Relationship
When density increases, the temperature decrease. When density decreases, temperature increases. When more temperature increases, density reduces.
HOW DOES SALT CHANGE THE DENSITY OF WATER? Adding salt to water makes the water denser. As the salt dissolves in the water, it adds mass (more weight to the water). This makes the water denser and allows more objects to float on the surface that would sink in fresh water.
Can salinity be determined by density? ›
Both temperature and salinity affect density. The more dissolved salts there are in a body of water, the greater the density of the water. If the density and temperature of a water sample are known, salinity can be determined from a graph (Fig. 2.13).
How does salinity affect density currents? ›As the seawater gets saltier, its density increases, and it starts to sink. Surface water is pulled in to replace the sinking water, which in turn eventually becomes cold and salty enough to sink. This initiates the deep-ocean currents driving the global conveyer belt.
Why is density greater in salt water? ›Salt water is more dense than fresh water
Salt water has more stuff in it than fresh water. That stuff would be the salt, which makes the mass of water greater, without adding much to its volume. Density = mass/volume. Increasing the mass by adding salt increases the density.
Saltwater has a higher mass because of the added salt but still occupies the same amount of space in a container that regular water would, and hence is denser. Tell students that we can gradually change the density of the water by adding salt to it.
Does salt water make water more dense? ›saltwater has a higher density than freshwater. less dense matter will lie above more dense matter.
What two factors affect the density of water? ›Answer: There are two main factors which affect the density of water, namely, Temperature and Purity. The density of pure water varies with temperature and attains its maximum value at a temperature of 4^{0}C.
What affects water density? ›In practical terms, density is the weight of a substance for a specific volume. The density of water is roughly 1 gram per milliliter but, this changes with temperature or if there are substances dissolved in it. Ice is less dense than liquid water which is why your ice cubes float in your glass.
What causes water salinity to decrease? ›Near the equator, the tropics receive the most rain on a consistent basis. As a result, the fresh water falling into the ocean helps decrease the salinity of the surface water in that region. As one move toward the poles, the region of rain decreases and with less rain and more sunshine, evaporation increases.
What affects density more temperature or salinity? ›Temperature has a greater effect on the density of water than salinity does.
How do temperature salinity and density change with depth? ›Notice also that in many ocean regions, temperature and salinity both decrease with depth. A decrease in temperature results in an increase of density, so the temperature stratification produces a stable density stratification. A decrease in salinity, on the other hand, produces a density decrease.