A deep sea is a type of ecosystem. It has water at the bottom of the ocean, no sunlight, and organisms that crawl or stick to the ground.
Choice 1 is a deep sea ecosystem. It is at the bottom of the ocean. It is so far underwater that no sunlight can reach it.
Choice 2 is a tropical coral reef ecosystem. It has shallow water and many different types of organisms.
Select the deep sea ecosystem.
A: This ecosystem has:
water at the bottom of the ocean
no sunlight
organisms that crawl or stick to the ground
B: This ecosystem has:
shallow, salty water
bright sunlight
many different types of organisms