earth science help!!?

Question

ANALOGY -- SiO2: diatoms as CaCo3: ______________

A.

Plankton

B.

Diatoms

C.

Foraminifera

D.

Radiolarians

Answer 1

Favorite Answer

C. Foraminifera

Foraminifera - CaCO3, animal-like (such as Globigerina ooze)

Diatoms - SiO2, plant-like (forms diatomaceous earth - diatomite)

Radiolarians - SiO2, animal-like

http://www.oocities.org/walmas1/