This is the last question on my test and i dont know it? answer quick!

which of these is an environmental change that occurs rapidly?

a) regrowth after flooding

b) human population growth

c) hurricane

d) ecosystem changing from a meadow to pond

it would be C.

because it would destroy an environment very very rapidly for anything in its path

The answer you are looking for is chitin.

According to a page that I found with info on the subject,

"All arthropods have bodies divided into segments and covered with a hard EXOSKELETON. This tough casing is made of a protein called chitin, which is also found in human fingernails."

https://www.factmonster.com/dk/encyclopedia/nature/arthropods

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