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kirill115 [55]
3 years ago
8

What must be present for natural selection to occur?

Biology
1 answer:
meriva3 years ago
5 0
There are 4 thing that need to happen for natural selection to occur:
1) reproduction
2)heredity
3)variation in fitness or organisms
4)variation in individual characters of the population.
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Define the following words:
Svet_ta [14]

Answer: cellular membrane: The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.

Explanation:

passive transport Passive transport is a type of membrane transport that does not require energy to move substances across cell membranes. Instead of using cellular energy, like active transport, passive transport relies on the second law of thermodynamics to drive the movement of substances across cell membranes.

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3 years ago
Which of these choices is a direct cost of using coal?
yawa3891 [41]

Answer:

  • C. Coal-miner salaries

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3 years ago
A widow of 6 months is brought to a psychiatric hospital. during the assessment interview the client avoids eye contact, respond
Rama09 [41]
<span>I think that the best initial approach to the client by the nurse would be to comfort and first assure the client that she's not there to hurt or harm the client in any way and that no one is judging (s)he and most important that this recommendation is only for the better and to help the client.</span>
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3 years ago
which part of the brain plays a key role in forming and storing the implicit memories created by classical conditioning?
inysia [295]

The part of the brain which plays a key role in forming and storing the implicit memories created by classical conditioning is the Cerebellum.

As well known, the central nervous system (CNS) is made up of the brain and spinal cord. The peripheral nervous system (PNS) on the other hand is composed of spinal nerves that branch from the spinal cord.

The brain is subdivided into 3 parts:

  • The Cerebrum which is the largest part of the brain and is composed of right and left hemispheres and is responsible for performing higher functions like interpreting touch, vision and hearing, as well as speech, reasoning, emotions, learning, and fine control of movement.

  • The Cerebellum which is located under the cerebrum. Its function is to coordinate muscle movements, maintain posture, and balance. An additional function of the cerebellum is the formation and storage of memories created by classical conditioning.

  • The Brainstem which acts as a relay means connecting the cerebrum and cerebellum to the spinal cord. It is responsible for many automatic functions such as breathing, heart rate, body temperature, wake and sleep cycles, digestion, sneezing, coughing, vomiting, and swallowing.

Ultimately, The part of the brain which plays a key role in forming and storing the implicit memories created by classical conditioning is the Cerebellum.

Read more:

brainly.com/question/17174315

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3 years ago
When blood flows through the heart, what force pushes the blood out of the heart and into the arteries?
LuckyWell [14K]
Left Ventricle pushes blood
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3 years ago
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