Mollusks in class Cephalopoda include

A. slugs and snails.
B. oysters and scallops. C. nudibranchs.
D. none of the choices are correct.

Average annual precipitation and are the two major features that define the biomes on earth.

What claim did thorne make? what evidence supported his claim?

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.