Which set of features below best describes the radiolaria? a. phytoplankton; silica 'hard parts'
b. zooplankton; silica 'hard parts'
c. zooplankton; calcite 'hard parts'
d. phytoplankton; cellulose 'hard parts'

The correct option is b

Explanation:

Radiolaria (or radiozoa) are protozoa that produce mineral skeleton often made up of silica. They exist as zooplankton in ocean bodies. Zooplanktons are heterotropic planktons that live in open water bodies; they feed on bacteria and algae and are fed on by fish and insects.

The skeletal remains of Radiolaria make up a large part of the ocean floor and are referred to as siliceous ooze.

From the above explanation, we can deduce that the correct option is b

The correct option is b

Explanation:

Radiolaria (or radiozoa) are protozoa that produce a mineral skeleton often made up of silica. They exist as zooplankton in ocean bodies. Zooplanktons are heterotropic planktons that live in open water bodies; they feed on bacteria and algae and are fed on by fish and insects.

The skeletal remains of Radiolaria make up a large part of the ocean floor and are referred to as siliceous ooze.

From the above explanation, we can deduce that the correct option is b

one would be wind another would be water density

2%? i tried finding the exact sorry if it's not 100% correct ; -;