Author Question: In general, most ecosystems in the world have A) remained relatively unchanged for millions of ... (Read 70 times)

elizabeth18 · **on:** Jul 16, 2018

In general, most ecosystems in the world have

A) remained relatively unchanged for millions of years.
B) been impacted by human activities.
C) experienced increased ecosystem capital because of human activities.
D) already been significantly harmed by global climate change.

Question 2

If any component of the atmosphere causes an increase in the retention of energy, it

A) will leave the planetary albedo unaffected.
B) has a positive value of radiative forcing.
C) has a negative value of radiative forcing.
D) will help mitigate global warming.