When lactose is not present, what happens to E. coli is that the genes that produce the enzymes needed to break down lactose are not expressed. The correct answer is B.
Answer:
Explanation:
Causes for Disruptions in the Food Web
Overpopulation.
Water pollution.
Acid rain.
Climate change.
Air pollution.
Illegal hunting.
Soil pollution.
Illegal dumping.
23. When the sperm cell then meets the egg, the 23 chromosomes that each sex cell have form the 46 total chromosomes that each human being has.
Answer:
Both have strong scientific support.
Explanation:
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