Just like any other organisms, individual bacteria can undergo random mutations. Many of these mutations are harmful or useless, but every now and then one comes along that gives its organism an edge in survival. And for a bacterium a mutation making it resistant to a certain antibiotic gives quite the edge.

What's the main idea of this? (10 words or less.)

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation:

maritime tropical may be your answer.

geologic time scale (for gradpoint) =)