What geologic process could have formed the channel on Mars?

Granite rock is light in color. which feature directly contributes to this color? the process that forms granite the amount of silica minerals in granite the shape of the grains found in granite the unique pattern formed by grains in granite

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

The largest unit within which gene flow can readily occur is a