Explanation:
HIV attacks a specific type of immune system cell in the body. It's known as the CD4 helper cell or T cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections. When HIV is left untreated, even a minor infection such as a cold can be much more severe.
The answer is : crossing over can increase genetic variations during meiosis
Theres not a photo there, or like i cant see one x
B. Thick Atmosphere
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Your answer would be C.It encloses the cytoplasm.