Answer:
they mutate and become immune to modern medicine
Explanation:
The original source of phosphorus in a terrestrial ecosystem is soil microorganisms. soil becomes deficient in phosphorous leading to ecosystem retrogression. phosphorous can be found in our body, it builds strong bones and teeth.
hope it helps!
The answer is true you can find these things out by DNA abd chromosomes
Answer:
Natural selection. It is simply the process by which random variations that give an individual a favorable adaptation to its environment survive to be passed on to offspring.
