Clouds ____ the temperature of Earth's atmosphere due to ...

[leilurhhh]

Clouds ____ the temperature of Earth's atmosphere due to reflection of solar radiation and ____ it due
  to greenhouse re-radiation.
  a. raise; raise
  b. raise; lower
  c. lower; raise
  d. lower; lower
  e. Clouds have no impact on the temperature of Earth's atmosphere

Question 2

A situation where a system acquires a new stable set of conditions significantly different from the
  original ones is an example of which type of feedback?
  a. positive
  b. negative
  c. run-away
  d. formative
  e. cumulative

[kjohnson]

Answer to Question 1

C

Answer to Question 2

C

[leilurhhh]

Gracias!

[covalentbond]

Wow, this really help