Approximately when did Earths atmospheric temperature begin ...

[jman1234]

Approximately when did Earths atmospheric temperature begin rising?
   a. mid-1500s
   b. late 1700s
   c. early 1900s
   d. late 1900s
   e. early 2000s

Question 2

Which of the following is the best example of a positive feedback effect?
   a. Melting ice exposes the dark surface of the ocean, which reflects less of the suns energy than ice. This heats the water and in turn, melts more ice.
   b. Melting ice exposes the dark surface of the ocean, which reflects more of the suns energy than ice. This heats the water and in turn, melts more ice.
   c. Melting ice allows ocean levels to rise and reduce the surface area of the remaining ice, slowing its melting rate.
   d. Aerosols block the suns radiation, slowing the melting of ice.
   e. Aerosols cause air pollution, which increases local drought conditions.

[kusterl]

Answer to Question 1

ANSWER: b

Answer to Question 2

ANSWER: a

[jman1234]

Excellent

[cam1229]

Gracias!