Answer that does not describe the structure of an atom: The electron clod is a small and compacted space around the nucleus.
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<span>The circulatory system is vital in the exchange of oxygen with the cells in the animal's body because there is no living creature that can survive without oxygen, it keeps the body active.
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Answer:
The correct answer is C) There is a larger variety of MHC proteins that can be expressed on the cell surfaces of their immune cells, providing a wider opportunity to recognize and attack pathogens.
Explanation:
Answer:
Night or Day
Explanation:
when the earth is tilted towards the sun it is day and when it's titled away it is night
