Question 17: a. If we fail to protect these irreplaceable ecosystems now, we will lose countless species and endanger the very systems that...

Question 17:

a.        If we fail to protect these irreplaceable ecosystems now, we will lose countless species and endanger the very systems that sustain human life on Earth.

b.        While these ancient ecosystems regulate global temperatures and rainfall patterns, they also store massive amounts of carbon that would otherwise accelerate climate change.

c.        Rainforests, which cover only six percent of Earth's surface, are often called the "lungs of our planet" because they produce much of the world's oxygen.

d.        Although conservation efforts have increased recently, deforestation driven by agriculture and logging continues to destroy an area equivalent to forty football fields every minute.

e.        Since rainforests are home to over half of the world's species, scientists believe that many undiscovered medicines remain hidden within their unexplored depths.

A. c-a-b-e-d                                        B. c-e-d-a-b                                C. c-b-e-d-a                                D. c-d-e-b-a