(NEED HELP ASAP)Biotic factors are the living aspects of an ecosystem (e. g. animals and plants), and the nonliving aspects of an ecosystem
(e. g. sunlight and water) are known as

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

Which of the following forest management practices is best for reestablishing areas of forest?

Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?