Which of the following events would most unpredictably affect an ecosystem?
A. the removal of one old tree
B. a mutation in a native bacteria
C. the annual birth of a new generation of deer
D. a rainstorm that causes minor flooding.

B

Explanation:

It would be a mutation in a native bacteria.

b. a mutation in a native bacteria

Explanation:

got it right on study island :)

the framers of the constitution insisted that federal judges be nominated instead of elected due to their desire to have judges above the shifting whims of the masses.

the hope, whether achieved or not, was that federal judges would only be beholden to the law and that by not having judges be elected, they would be protected if that law dictated an outcome that ran counter to popular opinion.