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Olenka [21]
3 years ago
13

What Is a variation?

Biology
1 answer:
Mumz [18]3 years ago
8 0
A change or a slight difference
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Answer:

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Explanation:

The lymphatic system's primary role is to produce white blood cells. The main organs were these cells are produced are the bone marrow, the thymus, the spleen, and the lymph nodes, which are distributed in different parts of the body, such as our neck, armpits and near the groin. these organs produce and store white blood cells, that will circulate in the blood or will be in action when the blood is filtered in the spleen or lymphatic nodes.

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3. You raise your hand in class to answer a question that the professor asked. Which
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you are using your shoulder muscle. The reason you are using this muscle is when you put your arm strait up there is no reason to use a bicep or tricep muscle.

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