Answer:
because its a new place and the imvirontment isnt used to them
Explanation:
The changes in foot structure in a bird population over. Evolution leads to less complex organisms. And also the lock-and-key model.
Yaa that statement is true, complex chemical catalyst of living cells are enzymes
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Answer: C) They can contain contaminants that can enter the air during storms or high winds.
Explanation: A is wrong because I got it wrong (Sorry, can't give much explanation there).
B is wrong because water contamination does not directly relate to respiratory health.
D is wrong because fertilizers can impact respiratory health (Explanation seems lack-luster, but I feel like this is common sense).
Hope this helps :)
