Volcanic eruptions can — (1 point) O draw animals to the area.
O add nutrients to the surrounding soil.
O increase biodiversity.
O drastically alter the ecosystem.

Add nutrients to the soil

Explanation:

Plants are destroyed over a wide area, during an eruption. The good thing is that volcanic soil is very rich, so once everything cools off, plants can make a big comeback!

Hope it helped!!!

ocean expansion, global warming is melting icebergs and causing water levels to rise.

i believe the answer would be b. hope it : )