describe how Darwin's theory of evolution by natural selection can explain the spread of antibiotic-resistant microorganisms which caused the return of Leticia strep throat

Which of the following is an advantage of solar energy?

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 does the nervous system affect the excretory system?