Jet contrails A) only form in the lower stratosphere. B) last ...

[xroflmao]

Jet contrails
 A) only form in the lower stratosphere.
  B) last longest when they form in air that is cold with little water vapor.
  C) probably contribute to global warming.
  D) are essentially altostratus clouds.
  E) all of the above

Question 2

Increased numbers of aerosols in the atmosphere
 A) means fewer cloud condensation nuclei.
  B) can only come from human activities.
  C) makes clouds more reflective.
  D) makes clouds more likely to produce precipitation.
  E) none of the above

[dawsa925]

Answer to Question 1

C

Answer to Question 2

C

[xroflmao]

Gracias!

[marict]

TYSM