Answer:
the last one because
Explanation:
matter is not created or destroyed so everything that you put in the solution will make up the mass
B. It can cause widespread death
it can also
C. It may seriously impact healthy adults.
flu is caused by a virus (influenza) NOT bacteria
Vaccines are made, but may not necessarily be available for a pandemic right away (takes time to develop).
The answer is D because this would help them to survive and is equal to natural selection
<span>A. Primary Succession is my answer! :)
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