A scientist studied a population of birds for 10 years. During that time, the population was never fewer than 30 birds and never more than 50. Her data showed that over half of the birds born did not survive to reproduce, because of competition for food and predation. She noticed that In a single generation, about 90% of the birds that were born lived to reproduce, and the population increased to 90. Which inference(s) about this population might be true

Answers

Answer 1

Answer:

A particular population limiting factor or factors must have been removed

Explanation:

The population of the birds must have been kept between 30 and 50 individuals by population limiting factors such as the presence of predators within the community or competition for resources such as food or spaces.

For the population to shoot up to 90 all of a sudden, it may be that one or more of the population limiting factors has been removed from the population. It could be that a major predator has been removed from the community or the competition for food/space is now significantly reduced due to more food/space in the community.


Related Questions

who constructed the periodic table​

Answers

Answer:

well the modern day periodic table was created by Henry Moseley

Dmitri Mendeleev constructed the periodic table .

hope it is helpful to you

What is fracking???????????

Answers

the process of injecting liquid at high pressure into subterranean rocks, boreholes, etc. so as to force open existing fissures and extract oil or gas.

A Russian citizen has illegally obtained a Siberian tiger and is trying to sell the tiger’s fur in the United States. What treaty does this violate?
A.Tiger Treaty
B.Lacey Treaty
C.CITES
D.EPA

Answers

Answer:

Cites,

Explanation:

Another Answer on Brainly

The treaty that the Russian citizen violated is CITES or Convention on International Trade in Endangered Species. The treaty was drafted from 1973 in order to protect the over - exploitation of wildlives.

A Russian citizen has illegally obtained a Siberian tiger and is trying to sell the tiger’s fur in the United States, CITES treaty does this violate. Therefore, the correct statement is option C.

What is CITES?

CITES, or the Convention on International Trade in Endangered Species of Wild Fauna and Flora, is the treaty that this action would break. Since Siberian tigers are considered an endangered species, the Convention on International Trade in Endangered Species (CITES) regulates international trade in their parts or products.

A violation of CITES regulations is the illegal possession, sale, or transportation of an endangered species or its parts or products, like fur, without the necessary permits or documentation.

The Lacey Act is a US regulation that denies the exchange unlawfully got natural life, plants, and their items, yet refers to a worldwide settlement that oversees the exchange of jeopardized species across borders. The United States Environmental Protection Agency (EPA) is in charge of enforcing environmental laws.

Therefore, the treaty that this action would violate is CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora).

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For each of the following elements, write the chemical symbol, the atomic number, the atomic mass, the number of protons, and the number of neutrons. Don’t forget to round the atomic mass to the nearest whole number.

Plutonium

Chromium

Neon

Gold

Radon

Answers

Answer:

neon bc neon is it PEriot and don't forget to round the atomic mass to the nearest whole number in assuming this is one ur assignments

Answer:

here are your answers :)

Explanation:

*No Links*

Describe the course of the water cycle which formed in Biosphere 2

Answers

The sun warms the ocean surface and other surface water, causing liquid water to evaporate and ice to sublime. It turn directly from a solid to a gas. These sun driven processes move water into the atmosphere in the form of water vapor.

The sun warms the ocean surface and other surface water, causing liquid water to evaporate and ice to sublime. It turn directly from a solid to a gas.

These sun driven processes move water into the atmosphere in the form of water vapor.

Describe two ways that water moves through Earth’s biosphere in the water cycle?

Some ways that water moves through the Earth's biosphere in the water cycle evaporation, combustion, decay, and respiration.

Thus, These sun driven processes move water into the atmosphere in the form of water vapor.

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Which process produces diploid cells?
A. Mitosis

B. Meiosis

Answers

Answer:

the answer is: A

Explanation:

mitosis

Answer:

Mitosis produces 2 diploid cells.

What are chromosomes ? explain​

Answers

Explanation:

sana po makatulong sainyo

Question

What are chromosomes?

Answer:

Chromosomes are thread-like structures found within the nucleus of both animal and plant cells. Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA). DNA is passed along from parents to children and carries the precise instructions that distinguish each living thing.

The word "chromosome" is derived from the Greek terms "chroma" and "body" (soma).

--------------------------hope it helps...have a great day!!

Biological knowledge is important in all of the following except

Answers

Answer:

both a body of knowledge and an intellectual activity encompassing observation, description experimentation, and explanation of natural phenomenon.

Explanation:

Explain in at least five sentences what you've learned about how
global warming and climate change are impacting our Earth in different regions of the world.

Answers

Explanation: I'd first address the issue as a whole and explain the meaning and the general impacts of climate change, then use a variety of different places. For example, global warming causes the ice caps to melt in Antarctica. Then, explain how this has an impact on the environment meaning that polar bears could be in life-threatening situations and possibly even become extinct in the future which has a further impact on other animals in that food chain and ecosystem. This is just one example. You could also explain the unbearable heat in countries nearer the equator, which prevent crops from growing; the sea levels rising; or extreme weather events like huge flooding or heatwaves. It depends what you have learnt about in class, but I'm assuming it would be about this sort of thing.

Answer:

Higher death rates. ...

Dirtier air. ...

Higher wildlife extinction rates. ...

More acidic oceans. ...

Higher sea levels.

hope it helps


*100 POINTS* | No Links, thank you in advance for your help.


Creating a new, sealed biosphere doesn’t have to cost millions of dollars. With little effort, you can create your own, small, enclosed bio-system. The following sketch is a schematic representation of such a project.


Name the divisions of the Biosphere above labeled:

A.
B.
C.


Describe at least three interactions between the living and non-living components of the Biosphere above:

1.
2.
3.

Answers

Answer:

1. The bottle itself is growing living plants from inside.

2. Because of the gravity pull between the lid of the cup and the water, the water is flowing through the bottom lid.

3. The bugs in the bottle are living inside an ecosystem that is not natural.

Explanation:

I hope that this helps, and I hope that you ace your assignment/quiz/test. This is from Edge correct? Because I think that I did this before...

Answer:

lithosphere

atmosphere

hydrosphere

are all insects harmful?​

Answers

No, not all insects are bad. Insects get labeled as "pests" when they start causing harm to people or the things we care about, like plants, animals, and buildings. Out of nearly one million known insect species, only about one to three percent are ever considered pests.

What bodies of water may be cold

Answers

Answer:

Flowing rivers and streams,Spring-fed bodies of water,Most open water except in tropical regions,

a body can be cold and ice

Identifying an individual's genetically influenced health risks could increase their potential to achieve optimal health.

Answers

Answer:

Yes.

Explanation:

Yes, Identifying an individual's genetically influenced health risks could increase their potential to achieve optimal health because necessary steps can be taken in order to prevent the disease from more spreading and cause damaged to the body. Identification of genetical disease can be prevented to cause damage if the factors that triggers the disease can be avoided so we can conclude that identification of genetically influenced health risks can increase the chances of getting good health.

Answer:

true

Explanation:

What are the phenotypes of an organism?
A. the organism's genes

B. the organism's physical traits

Answers

Answer:

A.

Explanation:

The term "phenotype" refers to the observable physical properties of an organism; these include the organism's appearance, development, and behavior. An organism's phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.

Answer:

A. the organism's genes

Explanation:

The phenotypes of an organism are the genes carried by the organism.

Reproduction for dolphins and badgers and people is more complicated because
A. we have to apply for a license before we can reproduce

B. have to find a partner

C. go through the cellular process of MITOSIS to produce sex cells.

Answers

Answer:

B. have to find a partner

Explanation:

When two badgers get together and fall in love, a sperm cell from the father which contains a copy of half of his DNA, only half, combines with the egg cell of the mother, which contains half a copy of her DNA. The result is a brand new cell with all the information to divide and grow up into a brand new badger. The new child matures to be similar to our parents, but also unique, because she developed some traits from her mother’s DNA, and some from her father. Her new combination of traits can be passed on to her children, and again.

"I don't get it. Why do I need to learn about meiosis to understand about variation in a species?" moaned Trina. How would you explain to her what the relationship is between the two?

Answers

Answer:

The cell division that halved the no. of chromosomes is the meiosis. The meiosis takes place during formation of gametes (eggs & sperms) in higher organisms. eggs & sperms posses only one chromosomes of each pair of chromosomal set. (2n➡️n).

When these gametes fuse to form the zygite, the chromosomes become n+n➡️2n again.

To determine the density of a rabbit population, one would need to know the number of rabbits and __________. View Available Hint(s) To determine the density of a rabbit population, one would need to know the number of rabbits and __________. their pattern of dispersion the size of the region in which they live the factors that limit population growth for that rabbit population the growth rate of the population the birth rate

Answers

Answer:

The growth rate.

Explanation:

To determine the density of a rabbit population, one would need to know the number of rabbits and the growth rate of rabbit's population because both factors allow us to determined the population of rabbit in a specific region. If we know the existing population of rabbits in a particular area as well as the growth rate at which the rabbit population increases so we can find out the density of rabbit population in a specific time period.

Consider this plant cell. The organelles in a plant cell are labeled. Part G is the middle layer of the cell. Which organelle is labeled G?

Answers

Answer:

Hi. You didn't show the picture that shows organelle G, but since you showed that organelle is the middle layer of the cell, we can say that it is the plasma membrane.

Explanation:

In general, we can state that the plant cell has three layers, the cell wall, the plasma membrane and the cytoplasm. The cytoplasm is the inner layer, where most of the organelles and the cell nucleus are located. Above the cytoplasm is the plasma membrane, which is semi-permeable and promotes the regulation of the entry and exit of substances from within the cell. Above this membrane is the cell wall, which is an impermeable structure that protects the cell and promotes its rigidity. In this case, we can consider that the middle layer of the cell is the plasma membrane.

One of the major function of the skin is the production of Vitamin D
True
False​

Answers

Answer:

one of the major function of the skin is a production of vitamin d false.

Which of the following is not a concern associated with fossil fuel dependence?

A. global warming
B. rising prices
C. increased competition
D.increased development

Please select the best answer from the choices provided

Answers

Answer:

D. increased development

Explanation:

I compared answers with others and found out d is correct. trust me :)


2. Define biomagnfication.

Answers

Answer:

It is the gradual accumulation of substances

PLEASE HELP! WILL MARK BRANLIEST!
Carbon Dioxide trapped in the atmosphere causing the Earth to become is called the ___:

A. global warming, B. greenhouse effect, C. botanical gardens effect

Explain why.

Answers

Answer:

b.greenhouse effect

Explanation:

Trap heat similar to the glass roof of a greenhouse.These heat-trapping gases are called greenhouse gases

Answer:

B. Greenhouse effect

Explanation:

What is the greenhouse effect?

planets

Credit: NASA Jet Propulsion Laboratory.

The greenhouse effect is the way in which heat is trapped close to Earth's surface by “greenhouse gases.” These heat-trapping gases can be thought of as a blanket wrapped around Earth, keeping the planet toastier than it would be without them.

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Which choice BEST explains why each island in the Galapagos has unique kinds of iguanas?

A. Iguanas prefer a marine environment.

O B. Some iguanas are better swimmers than others.

O C. The species arrived on the islands in different ways.

OD. The species adapted to each island's unique habitat.

Answers

OD because they acquired adapted traits to better suit them in their environment

The statement that explains each island in the Galapagos has unique kinds of iguanas is that the species adapted to each island's unique habitat. The correct option is D.

What is adaptation?

Adaptation is defined in biology as a heritable behavioral, morphological, or physiological trait that has evolved through natural selection and maintains or increases an organism's fitness under a given set of environmental conditions.

To survive, all organisms must adapt to their surroundings. This entails adapting to the climatic conditions of the ecosystem, predators, and other species that compete for the same food and space.

The marine iguana is the only lizard in the world that can live and forage at sea, and it is only found in the Galapagos Islands.

There are eleven very similar subspecies found on various islands, with Isabela and Fernandina having the most. The species adapted to the distinct habitats of each island.

Thus, the correct option is D.

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Only forager bees leave the nest for their jobs
A
True
B
False

Answers

I think the answer is False

A species is an organism that has different traits cannot______ with other organisms.

1) breed
2) evolve
3) exist
4) survive

Answers

Answer:

2 evolve

I hope your answer is correct

In this process, a vesicle moves large substances, such as cells' waste products or specific products, out of the cell. What process does this describe? pinocytosis exocytosis endocytosis phagocytosis

Answers

Answer:

exocytosis is the process described above

How many protons does a lithium atom have

Answers

How many protons does a lithium atom have? Answer 3
The answer is 3 protons

Which is one way that analyzing ice benefits scientists who study ancient climates?

Scientists can analyze frozen volcanic dust to help predict eruptions.
Scientists can study the layers of ice cores to gather information about past atmospheric composition.
Scientists can use pollen grains in ice to make inferences about the climate area.
Scientists can study tree rings in ice to learn more about past climates.

Answers

Answer:

B

Explanation:

edge 2021

Analyzing ice benefits scientists who study ancient climates scientists as they can study the layers of ice cores to gather information about past atmospheric composition.

What are benefits of studying ice?

Ice refers to frozen water which is found on ocean or on land.

Ice helps to preserve ancient life forms.

The study of ice and ice structures helps scientists to discover ancient life formations as well as the composition of the ancient atmosphere.

Therefore, analyzing ice benefits scientists who study ancient climates Scientists as they can study the layers of ice cores to gather information about past atmospheric composition.

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Explain how Sodium and Potassium exchange during active transport Write your answer in 5 steps

Answers

Answer:

You can use these notes to answer your question

Dynein feet Group of answer choices are found on microtubules in cilia and flagella and cause movement by grabbing and pulling at adjacent microtubule doublets. are knobs of carbohydrate that are essential to the movement of cilia and flagella. are present in cilia but not in flagella. are the anchoring proteins in basal bodies.

Answers

Answer:

The correct answer is - are found on microtubules in cilia and flagella and cause movement by grabbing and pulling at adjacent microtubule doublets.

Explanation:

Dynein feet or arm is made up of dyneins a family of cytoskeletal motor proteins that present on microtubules in flagella or cilia or both and drives the beating motion of cilia and flagella.

These form the rows of arms or feet inside and outside, associated with the doublet microtubules of motile cilia that produce microtubule sliding to move along. It gets its energy through ATP hydrolysis.

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