Answer:
water and rocks; energy source, break down dead plants and animals, returning vital nutrients to the soil.
Explanation:
Answer:
d.
Explanation:
i just assume beacuse dna is everywhere.
Population density is the amount of people in one place. Population distribution is the spread of people around the world.
Climatic variations and Human activities , i don’t know the third reason ..
lighter bleeding, and others may skip their periods entirely. An abnormal lapse in monthly menstruation
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