He did not believe support the agency and voted a law that would keep it going.
If possible I'd say all of them except the fourth one down (parts of ecosystems are independant) but if not I'd say the most valid one is the second one down (healthy ecosystems help animals)
Answer:
The correct answer is <u>C</u>: but so have
.
Explanation:
After <em>but</em> we need an auxiliary verb to keep both parts of the question parallel, so we won't use A, B, and D, as these options do not have both parts parallel.
As the action started in 1965 and it is still valid, we should use the Present Perfect, so we won't use E (as this is Past Simple).
Therefore, the correct answer is C.
