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Nat2105 [25]
3 years ago
14

describe the basic process of evolution by natural selection. Describe the underlying genetic basis and role of the environment

in the process of natural selection
Biology
1 answer:
tankabanditka [31]3 years ago
6 0
Natural selection a process that occurs over successive generations and is defined as the differential reproduction of genotypes. Natural selection requires heritable variations in a given trait
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All muscle types will respond to an electrical stimulus because all muscle cells are _________.
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Answer:

excitable

Explanation:

All muscle types will respond to an electrical stimulus because all muscle cells are excitable.

Excitability is response of muscle to signal which delivered through the motor neuron.

Excitability is stretching of muscles.

The contraction and relaxation of muscle occur in following way:

Muscle contraction begins with signal. The contraction occur when nervous system send signals. The impulse which is called signal is travel through a motor neuron.

The whole process include following three steps:

1) Message is traveled from nervous to muscular system and trigger the chemical reaction.

2) This chemical reaction causes the muscle fibers to reorganize in such a way that shorter the length of them which is called contraction.

3) when this signal is no longer remain , reverse chemical process occur and muscles relax.

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City Town officials know that they have an abandoned factory site that has been identified for cleanup under CERCLA. When city o
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Answer:

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Explanation:

CERCLA is Comprehensive Environmental Response Compensation and Liability Act and it can also be called the Superfund. This act was passed in 1980 due to the intolerable hazardous waste practices and management that were ongoing in the 1970s. The goal of the CERCLA is to protect human health and the environment by  preventing environmental contamination and ensuring the cleanup when it occurs.

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