The cell membrane allows some, but not all, molecules to cross. what terms describes this property?

What’s this animal (picture is tagged) and where is it most likely to live, rainforest or desert?

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

How is the carbon cycle related to global warming ?