Explain the 4 parts of Darwin's Theory Parts.
1. Variation
2. Overpopulation
3. Adaptation
4. Descent with Modification
Your answer:

Answers

Answer 1

Answer:

The key points for the Darwin theory are

Explanation:

Charles Darwin was a British naturalist who proposed the theory of biological evolution by natural selection.

Darwin defined evolution as "descent with modification," the idea that species change over time, give rise to new species, and share a common ancestor.

The mechanism that Darwin proposed for evolution is natural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.

Natural selection causes populations to become adapted, or increasingly well-suited, to their environments over time. Natural selection depends on the environment and requires existing heritable variation in a group.

What is evolution?

The basic idea of biological evolution is that populations and species of organisms change over time. Today, when we think of evolution, we are likely to link this idea with one specific person: the British naturalist Charles Darwin.

In the 1850s, Darwin wrote an influential and controversial book called On the Origin of Species. In it, he proposed that species evolve (or, as he put it, undergo "descent with modification"), and that all living things can trace their descent to a common ancestor. What exactly is a species?

Darwin also suggested a mechanism for evolution: natural selection, in which heritable traits that help organisms survive and reproduce become more common in a population over time. What does "heritable" mean?

In this article, we'll take a closer look at Darwin's ideas. We'll trace how they emerged from his worldwide travels on the ship HMS Beagle, and we'll also walk through an example of how evolution by natural selection can work.

Early ideas about evolutionInfluences on Darwin

Darwin and the voyage of the Beagle

Darwin's seminal book, On the Origin of Species, set forth his ideas about evolution and natural selection. These ideas were largely based on direct observations from Darwin's travels around the globe. From 1831 to 1836, he was part of a survey expedition carried out by the ship HMS Beagle, which included stops in South America, Australia, and the southern tip of Africa. At each of the expedition's stops, Darwin had the opportunity to study and catalog the local plants and animals.

Over the course of his travels, Darwin began to see intriguing patterns in the distribution and features of organisms. We can see some of the most important patterns Darwin noticed in distribution of organisms by looking at his observations of the Galápagos Islands off the coast of Ecuador.

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Answer 2

Answer:

individuals of a species are not identical; traits are passed from generation to generation; more offspring are born than can survive; and only the survivors of the competition for resources will reproduce.

Variation :

Within a population, some traits can be expressed in various ways and make individuals look and behave differently. It can be hair color, body size, eyes color, reaction while facing a danger, ...

Inheritance:

Heritable traits are transmitted to the next generation.

High rate of population growth:

At each generation, the population produces more offspring than what the local environment can support. It leads to substantial mortality.

Differential survival and reproduction:

Individuals with the best combination of traits to survive in the actual environment will produce more offsprings for the next generation

Explanation:


Related Questions

what percent of fresh water is available for human consumption ?

Answers

Answer:

Only 1%

Explanation:

97% of the earth's water is salt water so we cant drink that. The remaining 3% of the fresh water is contaminated with germs so only 1% of it is ready for consumption :)

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A student is using a microscope to determine if a sample of pond water contains living things.
What observation does she need to record in her laboratory notebook to determine if the sample contains living things?

Answers

Answer:

at first she need to take a sample of pound and kept under zhe observation that any partices of living beings. she need to write how she took the sample and how she found sample of living things

Which of these is NOT a form of pollution caused by humans?
A. light
B. chemical contaminants
C. volcanic activity
D. noise

Answers

It's volcanic activity.

Explanation:

Volcanic Activity

18. How many elements do not end with the traditional element
suffix of - "ium"?
?

Answers

There should be 36 that do not include -ium

Answer:

38

Explanation:

There are 118 elements and 80 end in ium, meaning 38 do not

What phase(s) of cellular respiration could provide the organism with water?

Answers

Water is formed when hydrogen and oxygen react to form H2O during the electron transport chain, which is the final stage of cellular respiration

Mention one type of articulation (joint) and where is located.

Answers

Explanation:

PIVOT JOINT- between the atlas and axis

What is the role of a sensory receptors

Answers

Answer :A sensory receptor is a structure that reacts to a physical stimulus

Explanation: in the environment, whether internal or external. It is a sensory nerve ending that receives information and conducts a process of generating nerve impulses to be transmitted to the brain for interpretation and perception.

When a cell does not have enough oxygen to support cellular respiration, which of the following processes would occur?
anaerobic respiration
photosynthesis
aerobic respiration
krebs cycle

Answers

keeps cycle is the correct answer

HELP!! PLEASE. Fill in the missing information for the punnett square below.

Answers

Answer:

Bb Bb Bb Bb (All boxes)

Explanation:

Each are dominant


Describe how the sequence of nucleotides in mRNA codes for the amino acids of a protein. How can th
insertion or deletion of even one nucleotide in mRNA cause significant changes to the protein that
result?

Answers

Answer:

330

Explanation:

What could happen to a species if the environment changes causing it to become less well adapted to its environment?
A. The species will have less competition.
B. The species may become extinct.
C. The species is more likely to survive and reproduce.
D. There will be more variation within the species.

Answers

Answer:

C

Explanation:

What is the role of cartilage in the spinal column?

Answers

The cartilaginous discs between vertebrae absorb and distribute shock and keep the vertebrae from grinding together during movement.

The two polymer strands of a DNA molecule are held together by _____________ bonds between the _____________ of the nucleotides.

Answers

Answer:

The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.

Explanation:

please consider as brainlest

The two polymer strands of a DNA molecule are held together by hydrogen  bonds between the pairs of bases of the nucleotides.

What is mean by DNA molecule?Deoxyribonucleic acid (abbreviated DNA) is the molecule that carries genetic information for the development and functioning of an organism. DNA is made of two linked strands that wind around each other to resemble a twisted ladder  a shape known as a double helix.

The two polymer strands of a DNA molecule are held together by hydrogen  bonds between the pairs of bases of the nucleotides.

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What is a result of overhunting plant and animal species?

A. Species can become extinct
B. Species can overpopulate
C. Species reproduce faster than they normally would
D. Humans pollute natural habitats​

Answers

I believe it’s A, hope this helps!!

what directs light rays into the eye​

Answers

Answer:The cornea

Explanation:The cornea directs light rays into the eye and helps focus them on the light-sensitive retina at the back of the eye, providing sharp, clear vision.

Answer:

Lens

Explanation:

Lens refract light rays on to the retina

Which answer has two genotypes that will produce the same phenotype? Use complete dominance to answer.

•DD and dd
•Dd and dd
•They're all different.
•DD and Dd

Answers

DD and Dd: both produce a dominant trait

5) According to the visual, which three continents, as of 2004, are the largest consumers or energy per capita?
A) Europe, Australia, Asia
B) Europe, Africa, Australia
C;Asia, Europe, North America
D) North America, Europe, Australia

Answers

Answer:

the anwer is etiehr c or d

Explanation:

Answer:

D) North America, Europe, Australia

Explanation:

Does apoptosis cause cancer?

Answers

Answer:

yes it can, its's a much more complicated than we would like to think

What trends do you see in the
organisms of the ecosystem if
you decrease CO2? *

Answers

Answer:

When carbon dioxide concentrations drop, Earth cools, some water vapor falls out of the atmosphere, and the greenhouse warming caused by water vapor drops.

Explanation:

Which of these is a reason why there are more photosynthetic plants in an ecosystem than mammals
that feed on them?
A. Mammals are on the same trophic level as photosynthetic plants.
B. Plants convert all of their energy into a form that is unusable to mammals.
C. Mammals provide only 10% of their energy to plants.
D. Plants require less energy per organism than the mammals that feed on them.

Answers

Answer:

D

Explanation:

Plants require less energy per organism than the mammals that feed on themHence, since less energy is required per photosynthetic plant, more of them are present in an ecosystem
D ^^ i agree with them

1) A simplified nitrogen cycle in the ocean is shown here. The movement of nitrogen can impact algae growth, particularly the phytoplankton populations shown here. Large marine mammals, like whales,
move to the surface of the ocean and release nitrogenous wastes in the form of ammonia. Analyze the nitrogen cycle and select the logical explanation on the impact of the phytoplankton populations
A) Phytoplankton populations will increase as nitrogen availability increases at the surface.
B) Phytoplankton populations will decrease because the ammonia is toxic to the phytoplankton,
C) Phytoplankton populations will decrease as nitrogen influx will cause the phytoplankton to be outcompeted by the bacteria.
D) Phytoplankton populations will not increase nor decrease because ammonia is not a usable form of nitrogen for the phytoplankton
The Practice

Answers

Answer:A) Phytoplankton populations will increase as nitrogen availability increases at the surface.

Phytoplankton populations will increase as nitrogen availability increases at the surface. So, the correct option is (A).

What is Nitrogen cycle?

The nitrogen cycle is defined as the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates in atmospheric, terrestrial and marine ecosystems where nitrogen is transformed through both biological and physical processes.

The steps which are involved in this process:

Nitrogen fixation.Assimilation.Ammonification.Nitrification.Denitrification.Dissimilatory nitrate reduction to ammonium.Anaerobic ammonia oxidation.

It is a repeating cycle of processes during which nitrogen moves through both living and non-living things such as the atmosphere, soil, water, plants, animals and bacteria. In order to move to different parts of the cycle, nitrogen must change form. In this cycle , the phytoplankton increases the nitrogen availability.

Thus, Phytoplankton populations will increase as nitrogen availability increases at the surface. So, the correct option is (A).

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b) Without insulin, what happens to the glucose transporter (GLUT 4) on the cell surface?

Answers

GLUT4 is a glucose transporter protein that is detained intracellularly without insulin in different vesicles that contain proteins such as aminopeptidase.

What is the GLUT4?

It is the skeletal muscle-specific glucose transporter, found mainly in insulin-sensitive tissues, such as muscle and adipocytes.

The lack of insulin affects the migration of Glut-4 towards the plasmatic membrane, being stopped intracellularly in different vesicles and therefore producing a decrease in the transport of glucose into the cell.

Therefore, we can conclude that GLUT4 is a glucose transporter protein that is detained intracellularly without insulin in different vesicles that contain proteins such as aminopeptidase.

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Explain how energy flows in a food chain.
DONE

Answers

Energy flows in a food chain from sun to plant then an animal eats that plant and another animal eats that animal and then we eat that animal and the cycle continues

Which of the following is most important to cultivating food in order to sustain human growth?

A. Domesticating animals
B. Agriculture
C. Mining species
D. Manufacturing​

Answers

B. Agriculture
hope it helps

This is a potato plant The potatoes you eat grow underground, attached to the roots. What other function do the roots have?

A) absorb water and nutrients

B) make food by photosynthesis
reproduction and seed-production

D) collecting sunlight

Answers

A) Absorb water and nutrients

Answer:

A) absorb water and nutrients

Explanation:

usa test i took it

What happens when you drink to much salt water

Answers

Answer:

when you drink to much salt water you dehydrate quickly

Explanation:

Consuming very salty water, like the kind in the ocean, may introduce more salt to your body than it's capable of processing. Your body attempts to flush the excess by inducing urination, pushing your kidneys into overdrive. Because you must excrete more water than you consume to get rid of the extra salt, you may dehydrate quickly.

Which of the following are true about photosynthesis and cellular respiration. (Select all that apply.)

Question 3 options:

The relationship between them enables life to survive as we know it.


They both take place in human cells.


The products of one process are the reactants of the other.


They both happen only in plants.

Answers

Answer:

The relationship between them enables life to survive as we know it. The products of one process are the reactants of the other.

Explanation:

i took the test and got 100% hope this helps

The following statement is true about photosynthesis and cellular respiration: the relationship between them enables life as one knows it to survive, that is the first option.

What are photosynthesis and cellular respiration?

Photosynthesis is the process by which green plants, algae, and some bacteria convert sunlight, water, and carbon dioxide into energy-rich organic compounds, such as glucose, and release oxygen into the atmosphere as a byproduct. During photosynthesis, light energy is absorbed by pigments called chlorophyll, and cellular respiration is the process by which all living organisms, including plants, animals, and humans, convert energy-rich organic compounds, such as glucose, into energy that can be used by the cells. During cellular respiration, glucose and oxygen are broken down in the cells to release energy in the form of adenosine triphosphate (ATP), which is the energy currency of the cells.

Hence, the following statement is true about photosynthesis and cellular respiration: the relationship between them enables life to survive as one know it. That is the first option.

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In what respect is a mycelium and a fruiting body similar?

Answers

Answer:

Both are made of hyphae.

Clarify the role of neuron when one suddenly touch the hot body?​

Answers

When a person meets a hot object without thinking about it, the heat stimulates temperature and danger receptors in the skin, resulting in a sensory impulse that passes to the central nervous system. After that, the sensory neuron forms synapses with interneurons, which then connect to motor neurons.

David is in therapy for anger issues. He is in therapy with six other people, who discuss their anger issues with each other and a therapist who is also present. David and the others in therapy give each other feedback, as does the therapist. David is MOST likely participating in _____ therapy.

group
REBT
dialectical behavior
family

Answers

Given what we know and the information being described in the question, we can confirm that David is most likely participating in group therapy.

What is group therapy?

This is exactly as it sounds, a therapy session involving more than one person at a time. The idea behind this method of therapy is that it to allow the participants to feel identified with their troubles, and take inspiration from others as to how to deal with and better their behaviors.

Therefore, we can confirm that David is most likely participating in group therapy.

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