DDT was hazardous because it:
A. decomposed too quickly
B. killed everything it was sprayed on
C. increased the amount of bacteria in soil
D. was carried all over the world by wind

Describe how alleles and genes are related

Astudent is looking through a microscope at some cells of an onion root tip. many of these cells are undergoing division since the root tip grows quickly and requires more cells. which cell most recently underwent metaphase? w x y z

What is the similarities and differences between bacteria and eukaryote?