Multiple Choice
The ozone layer is valuable because it blocks:
A) heat.
B) UV radiation.
C) radio waves.
D) asteroids.
E) all of these.
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q2: According to the _, the universe formed
Q22: Laboratory simulations provide indirect evidence that organic
Q24: Of the following extremes, at which has
Q25: The earth's earliest atmosphere was likely composed
Q26: Life probably would never have emerged on
Q28: Which of the following is the strongest
Q29: The accumulation of free oxygen in the
Q30: The extensive infolding of eukaryotic membranes form
Q45: Are the three methods of producing the
Q52: Fossils indicate that the first cells were