Which are causes of desertification? select three options.

global climate change
farming
deforestation
overgrazing
motor vehicles

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

What best explains the inability for life to exist in earth early atmosphere

In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds?