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Tatiana [17]
2 years ago
13

A fever is a sign that....

Biology
2 answers:
kotykmax [81]2 years ago
6 0

Answer:

a. the immune system is fighting infection

Explanation:

ankoles [38]2 years ago
5 0

Answer:

a. the immune system is fighting infection

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In general, when a substance changes from a solid to a liquid,
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This is a physical change.

Explanation:

A change in state, such as a change from solid to a liquid, is a physical change.

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Plants need both surfer and phosphorus in order to grow and reproduce. How do plants obtain sulfur and phosphorus?
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Plant absorb sulfur and phosphorus through the insecticide sprayed on the leaves.
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Ouch. You step on a tack and jrk away without even thinking. Then you decide to pick up the tack and put it on your desk. Which
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Answer: The body systems that are involved are:

--> Nervous System and

--> muscular system.

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The body is made up of different organ systems which usually works together to bring about proper functioning of the living organism. Examples of the body systems includes:

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--> The muscular system: This system enables the organism to move from one location to another.

Both the nervous system and the muscular system work together to bring about coordination of activities. When you step on a tack and jeck away, sensory receptors detects stimuli from the external environment and pass the information received as an electrical impulses to the brain through the nerve fibres. The information is processed in the central processing region which is the brain.

The effectors such as the muscles goes into action upon receiving nerve impulses from the brain. Such actions includes muscular contractions which helps you to pick up the tack and put it on your desk.

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Humans breathe through bronchi.
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tracheae

instead of lungs, insects breathe with a network of tiny tubes called tracheae

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The process where fertilization of the egg by the sperm happens in a laboratory dish and the fertilized egg is injected into the
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