Answer:
Pandemics occur for two reasons. The first is a change in the infectious agent and the second is in human patterns. Both involve exposing people to agents they don’t have resistance to. Diseases like SARS, avian flu, and the famous Spanish flu all involved a mutation in the virus that resulted in a new disease that no one had resistance too. Examples of the second are when new groups of humans make contact, like small pox amongst native Americans, and possibly the black death.
Explanation:
Answer: D. Earth’s outer core is deeper within Earth than oceanic crust is
Answer:
Many different species will form as they evolve and will feel different niches on the island. The mice that are isolated on a island will adapt into many different kinds of mice and will have there own way of living on the island. And the populations will get bigger and bigger.
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Explanation:
Cell membrane... i believe this to be the correct answer