Why do some marine scientists specialize in single-celled organisms? a) There are very few species to choose from.

b) Single-celled organisms are the least understood in the ocean.
c)
Many of them are poisonous, so they endanger other creatures.

d) Single-celled organisms form the foundation of life in the ocean.​

it's option D

Explanation:

scientist specialize in that area because single celled organisms form the basis of evolution. According to the scientist the first living thing on Earth were the single celled organisms.

single-celled organisms are the least understood in the ocean

they kick it to the curb.

explanation:

that current was nasty.

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.