Why are sea otters considered a keystone species? Why are they important?

Answers

Answer 1

because of the crucial ecological role they play in maintaining the health and stability of the nearshore marine ecosystem. It is important because without sea otters,sea urchins can overpopulate the sea floor and devour the kelp forest that provide cover and food for many other marine.


Related Questions

Which of the following is the best definition of Newton's theory of universal gravitation?
Every object is pulled downward with a force that increases as the height from which an object is dropped increases.

Every object is attracted to the Earth with a force that increases with increasing mass and distance.

Every object attracts every other object in the universe, with a force that increases as the objects' masses decrease and the distance between them increases.

Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.

Answers

the answer would be D!;

every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.

The definition of Newton's theory of universal gravitation is : ( D )

Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.

Newton's theory of universal gravitation states that "every object attracts every other object in the universe with an attracting force that is proportional to the product of their masses and is inversely proportional to the square of their distances "

Therefore based on the Newton's theory of universal gravitation the best definition from the options given above is Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.

Hence we can conclude that Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.

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Why is seed banks important ?

Answers

Answer:

protect ather hamfull and its save and clean

Explanation:

Seed banks protect and save plant genetic diversity, which is important for a number of reasons. These saved and viable seeds contain a treasure trove of useful genes that breeders can use for developing improved varieties of our major food crops

Which gas is most prevalent in the Earth's atmosphere?

Nitrogen

Oxygen

Argon

Carbon dioxide

Answers

Answer:

Nitrogen

Explanation:

The atmosphere contains many gases. The most abundant gas in the atmosphere is nitrogen and oxygen second. Argon is a insert gas which makes it the third most abundant gas in the atmosphere.

How can the variables light,water,and plant change

Answers

By changing the controlled variable.

Why is drilling oil reserves in the Arctic National Wildlife Refuge (ANWR) controversial? A) The controversy is over removing more nonrenewable resources from an area that has been set aside for the ecological health of wildlife. B) The controversy is about how much oil is actually in the ANWR. C) The controversy is over the cost of drilling for and extracting oil, and whether the government will subsidize the oil industry. D) The controversy is among people who want to store nuclear waste in the area, oil companies that want to extract oil, and indigenous people who want to keep their hunting territories. E) There is no controversy about this area because it has already been preserved for wildlife.

Answers

Answer: A

Explanation:

Answer:

A

Explanation:

I believe it is A, it makes the most sense since the refuge would be a protected area,  the removal of non renewable resources would be highly contested

A group of individuals of the same species living together in the same area is called

Answers

Answer:

Population:

A group of organisms of the same species, living in the same area at the same time

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Recombinant DNA technology involves which sequence of steps?

Answers

In standard cloning protocols, the cloning of any DNA fragment essentially involves seven steps: (1) Choice of host organism and cloning vector, (2) Preparation of vector DNA, (3) Preparation of DNA to be cloned, (4) Creation of recombinant DNA, (5) Introduction of recombinant DNA into the host organism, (6) Selection

Answer:

B

Explanation:

Processes of recombinant DNA technology involve isolation of DNA of the desired DNA fragment. In order to cut the DNA with restriction enzymes, it needs to be in pure form, free from other macromolecules. The DNA is enclosed within the membranes, we have to break the cell open to release DNA along with other macromolecules such as RNA, proteins, polysaccharides, and also lipids. This can be achieved by treating the bacterial cells/plant or animal tissue with enzymes such as lysozyme (bacteria), cellulase (plant cells), chitinase (fungus). The RNA can be removed by treatment with ribonuclease whereas proteins can be removed by treatment with protease.

in 1400, the most advanced naval fleet could be found in

A. China
B. Egypt
C. ireland
D. polynesia​

Answers

It would be A.) China.

Wind power is an indirect form of what type of power?

Answers

Answer: solar power

Explanation:  Wind power is considered indirect forms of solar power because the wind's energy originates in the uneven heating of the Earth. Water power is considered indirect solar energy because water is evaporated by solar hear, lifted and carried by the winds

Many kinds of data can be gathered in the study of ocean water. Predictions are based on accurate and precise scientific data. Which of these sets of data will yield the most precise data?

Answers

Hello. You did not present the answer options, which makes it impossible for this question to be answered accurately. However, I will try to help you in the best possible way.

The data set that will produce the most accurate data are the most specific and least general data, which have very specific characteristics and circumstances on the ocean water. An example of very specific data is the water temperature, where researchers will be able to interpret accurately and promote accurate data.

Urgent!! Will give brainlist to best answer!!

The top ten most commonly eaten foods mostly include grains and other starchy plants.

True

False

Answers

Answer:

true

Explanation:

Carbohydrates can be divided into three main categories: sugar, fiber and starch.

Starches are the most commonly consumed type of carb, and an important source of energy for many people. Cereal grains and root vegetables are common sources.

The diagram below represents an energy pyramid constructed from data collected from an
aquatic ecosystem. Which statement best describes this ecosystem?

A.The ecosystem is most likely unstable.
B.The herbivore populations will continue to increase in size for many years.
C.Long-term stability of this ecosystem will continue.

D.The producer organisms outnumber the consumer organisms.

Answers

D. The producer organisms outnumber the consumer organisms.

Energy pyramids are the models that show the flow of energy from the primary to the next level. From the energy pyramid, it can be said that long-term stability will be continued. Thus, option C is correct.

What are energy pyramids?

Energy pyramids are the representation of the energy levels and the primary producers and other consumers. The producers are the base of the pyramid followed by the primary consumers.

In an aquatic ecosystem, the algae are the primary producers that provide energy to plankton and act as primary consumers. These are get eaten by small fishes and large fishes. The number of consumers gets decreased as one rises to the upper level.

Therefore, option C. an aquatic ecosystem will have stability.

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Which of the following would NOT be considered growth and development?
A. a single cell getting larger before dividing
B. an egg becoming multiple cells
C. an organism going through multiple stages of life
D. group of molecules that are attracted together to form a larger sheet​

Answers

The answer is D cause is the best

Group of molecules that are attracted together to form a larger sheet​ is not considered as growth and development. The correct option is D.

What is growth and development?

Development is defined as an increase in psychomotor capacity, while growth is defined as an irreversible constant increase in size.

Both processes are heavily influenced by genetic, dietary, and environmental factors.

Growth is defined as a person's development in weight, age, size, and habits.

Development, on the other hand, is defined as the process by which a person's growth is visible in relation to physical, environmental, and social factors.

Growth simply means an increase in the size and mass of a specific organism over time.

Development is defined as the method by which a specific organism transforms itself from a solitary cell to a more complex multicellular organism.

Thus, the correct option is D.

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Select the correct answer.
Peter is a farmer who owns a cow. Which of these is most likely to be a sign of illness in the cow?
OA
The cow eats too much grass on one specific day
ов.
He finds the cow lying down in the pasture,
The cow has an abnormal lump on her neck,
OD
The cow makes a noise when she is hungry
The cow grazes only in one corner of the pasture,

Answers

Answer:

finds the cows with a lump on his neck

Which organelles are usually found in both plant and animal cells? A.cell walls B. centrioles C. mitochondria D. chloroplasts​

Answers

Answer:

C.

Explanation:

Both cells are eukaryotic

Inside
Outside
0
10
20.30
50
60
30
80
90 100
Time
(minūtes)
Change in
mass 19
6
0
3
2
9
33:
39
N
1.5.1
(10)
Plot a line graph of these results.
List TW nyimnmental factors that sould have caused the greater change
12​

Answers

Answer:

The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the south

The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the south

EDTA is commonly used in foods and cleaning products. It is also used in police laboratories to prevent the degradation of samples. Explain two ways this might serve as a problem in a trial involving DNA evidence.

Answers

Answer:

EDTA is a chelating agent used to preserve samples for DNA extraction and as an anticoagulant  

Explanation:

Ethylenediaminetetraacetic acid (EDTA) is a well-known chelating agent that binds metal ions (iron and calcium ions). In police cases, EDTA can be used for DNA extraction since this agent chelates metal ions in DNase enzymes which are contained in the samples, thereby reducing their activity and preserving DNA samples for a long time. Moreover, EDTA is also used as an anticoagulant for blood cells, which allows preserving the cellular components and the morphology of blood samples.

Look at the food web below.
What would happen if the grains died out?
Is this an example of high or low biodiversity?

A. Mice would die out and there would be less food for all the rest of the animals in the food web. This is an example of LOW biodiversity.


B. Foxes would die out BUT there would be more food for all the rest of the animals in the food web. This is an example of LOW biodiversity.


C. Mice would have more food but the rest of the animals would starve. This is an example of FAIR biodiversity.


D. Owls would die out and there would be less food for all the rest of the animals in the food web. This is an example of HIGH biodiversity.

Answers

Answer:

below

Explanation:

C. Mice would have more food but the rest of the animals would starve. This is an example of FAIR biodiversity. Sorry if this is wrong

Define the actual distance of the span of the Milky Way galaxy

Answers

Distance Information
The Milky Way is about 1,000,000,000,000,000,000 km (about 100,000 light years or about 30 kpc) across. The Sun does not lie near the center of our Galaxy. It lies about 8 kpc from the center on what is known as the Orion Arm of the Milky Way.

Hopefully this helps you!!

what is hail stones?why is oxygen ​

Answers

Answer:

hailstones --> Hail is a type of precipitation, or water in the atmosphere. Hail is formed when drops of water freeze together in the cold upper regions of thunderstorm clouds. These chunks of ice are called hailstones. Most hailstones measure between 5 millimeters and 15 centimeters in diameter, and can be round or jagged.

i am sorry i can not answer the oxygen question because it is not all there.

Giving 10 points away please help me with this question ASAP!!!!

Answers

Should be D) I think.

Which body system transports the hormones that control the menstrual cycle?

Answers

Answer:

The hormone responsible for these changes is progesterone, which is manufactured by the corpus luteum. Under the influence of progesterone, the uterus begins to create a highly vascularized bed for a fertilized egg. If a pregnancy occurs, the corpus luteum produces progesterone until about 10 weeks gestation.

Your hormones are responsible for thow

The sun reaches its highest point in the Northern sky (North of the equator) on the:
A. Summer solstice
B. Winter solstice
C. Vernal Equinox
D. Autumnal Equinox

Answers

Answer:

A . Summer solstice... around June 21

Urgent!!
Genetically, a seed represents both male and female parent.
True
False

Answers

Answer:

True

Explanation:

Answer:

false

Explanation:

rep female

How does anatomical homology provide evidence of evolution?

Answers

Evidence for evolution is provided by homologous structures. These are structures shared by related organisms that were inherited from a common ancestor. Other evidence for evolution is provided by analogous structures.

2. What social issues affected the problem or its solution in each of the stories?

for conservation in each stories

"Using forests wisely"

"Community conservation"

Answers

Answer:

Social issues such as poverty and to fulfill basic needs etc.

Explanation:

Social issues such as poverty, lack of awareness and to fulfill basic needs etc affected the problem or its solution in the stories i.e. "Using forests wisely"  and "Community conservation" because these issues forced people to cut the forest and use the lands unwisely to fulfill their basic needs and betters their social status in the society. Due to poverty, people cut the trees in the forest and sold them to earn money in order to buy food and other necessary items for their family. If these social issues are solved, there is no need for cutting of trees and land use.

What might happen to the owl population if there were less rabbits, mice, and snakes in a given year

Answers

The answer is that It would die out

Owls prey on rabbits, mice, and snakes so a decrease in their population would decrease the population of owls.

What is the food chain?

A food chain describes which creature in the ecosystem consumes another. The food chain is a succession of living things that transmit nutrients and energy from one creature to the next. When one organism ingests another, this happens. Following the chain, starts with the producer organism and finishes with the decomposer organism.

The sequence of events in an ecosystem known as a "food chain" occurs when one live organism consumes another organism, which is then eaten by a bigger organism. A food chain is created by the transfer of nutrients and energy from one creature to another at various trophic levels.

The feeding habits or connections between living things are also explained by the food chain. Trophic level is the term used to describe the orderly phases in a food chain, from producers at the bottom through primary, secondary, and tertiary consumers. A trophic level is any position along a food chain.

Therefore, the owl population would decrease if their prey's population decreased.

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Since they are prokaryote cells, they do not have
or ______
a _____

Answers

Answer:

They don't have nucleus or they have distinct nucleus

Answer:

1.) membrane-bound organelles

2.) a nucleus

Explanation:

The law that states that the force of gravity acts between all objects in the universe that have mass is

Answers

Answer:

The Law of Universal Gravitation states that the force of gravity acts between all objects in the universe.

i hope this is right

A carrier mother (XHXh) of hemophilia marries a normal father(XHY). *Use allele letter H What are the mothers and fathers genotype?

Answers

Answer: The mother of the man can be either XHXH or XHXh and pass her normal allele to the son and his father can be either XHY or XhY, he only passes his Y chromosome. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

Explanation:

Hemophilia is an inherited bleeding disorder in which the blood does not clot properly. This can cause bleeding either spontaneously or after an injury.

It is related to the X chromosome and it is recessive for females, this mean they need both affected alleles to develop the trait. Males only need one recessive allele because they only have one X chromosome. This means that females need both parents to be at least carriers (although one or both can also have the disease or both recessive alleles). While males inherit it only from the mother, either she is a carrier (one recessive allele) or she has the disease (both recessive alleles). Then the mother passes the X chromosome with the affected allele to the son, and that son only receives the Y chromosome from the father, which does not have the gene that determines this disease.

If the mother is a carrier, her genotype is XHXh, being XH the normal allele and Xh the affected allele. She does not have hemophilia because she has a dominant allele. The father is XHY, so he does not have the disease because his only allele is normal (dominant)

The mother of the man can be either XHXH (she can only pass a normal allele) or XHXh and pass her normal allele to the son (in this case, the recessive allele is not inherited by chance.) His father can be either XHY or XhY, he only passes his Y chromosome which is not related to the disease. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

Other Questions
Use the words below with the correct preterite form of leer to write a complete sentence.Nosotros / un libro de Gabriel Garcia Marquez What is the axis of symmetry of the absolute value function y=-2|x+4.5|-1.4?A. x= -4.5B. X= 4.5C. X= 1.4D. x= -1.4 Which type of sides are they and explain why theyre the correct answer! Dan is drawing a self-portrait. His face is 8 inches long and his nose is 2 inches long. If the face in the drawing is 14 inches long, how long should he make the nose? Complete each mini-dialog with the appropriate words from the box. Conjugate the verbs when necesarry Solve the following inequality. x >-1 What is a basin? you guys cant copy from go ogle . Use this list to find the mode: 53, 66, 68, 68, 75, 75, 75, 79, 82 Can someone please help me All of the following describe formal writing language except _______.1. used in situations where the writer needs to sound like an expert2. avoids slang and dialect3. written as you speak4. academic style of writing Right now, TooMuch is 50 years older than Bodie. In 9 years, he will be 6 times as old as Bodie. How old are they right now? The U.S. Rice Millers Association claims that if the Japanese rice market were opened to imports by lowering tariffs, the resultant lower prices would save Japanese consumers about $6 billion annually. The Japanese government continues to use the high tariffs to make sure local farmers can earn a living. The tariff on rice is an example of What repeating decimal does 8/9 equal to in value what is 1+1=? PLZ i need help on this ppl keepp saying it is 11 Write 4-5 sentences on any interesting topic from any spanish speaking country Can someone make a z o o m and leave it because i need a z o o m but i cant because my schoolplease help meee Mr. Jones jogs the same route each day. The amount of time he jogs is inversely proportional to his jogging rate.What option gives possible rates and times for two of his jogs? A reforestation company is planting trees on a mountainside. The scatter plot below shows the forested area of the mountainside, with the reforestation work having started on the 1st of May.What does the slope of the line of best fit represent in the context of this situation?A. The forested area can be expected to increase by about 5/2 acres each day. B. The forested area can be expected to increase by an acre every 5/2 days.C. The forested area can be expected to increase by about 2/5 of an acre each day. D. The forested area can be expected to increase by an acre every 2/5 of a day. calculate:(2655)(4)(2)+(3)(822)(35)and thankyouu alottt What is another term fortranslation?A. RNA bufferingB. Protein synthesisC. DNA replicationD. Mitochondrial replication