Answer:
Medical conditions like declining vision and brain function become more common as people age.
Explanation:
...the fact that they are a physical contaminant.
<span>Most people in the world depend on food crops such as C. wheat, rice, soybeans, and corn.
You can make bread and other groceries using these foods, so it is definitely the choice on which many people around the world depend.
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The answer would be D. 30s (apex)