Question

_______________ has already caused the extinction of a large number of insect species on the tropical island of Madagascar. That, in turn, has lead to the near extinction of the lemur.
A)Acid Rain
B)Deforestation
C)Global Warming
D)The greenhouse effect

Answer 1

B. 

Acid rain isn't much of an issue there.
Global warming has some effect, but not as much.
Greenhouse effect is global warming.

Answer 2

So i think is b) Deforestation can cause extinction

i hope this help