Without the greenhouse effect operating in our atmosphere,
A) the ozone layer would not be weakening.
B) the Earth would have become much more like Venus long ago.
C) we would not have to worry about any warming problems in the future.
D) Earth would have an average temperature of -23 degrees Celsius.
E) the ice in the polar regions would have melted long ago.
D
You might also like to view...
How are the event horizon and Schwarzschild radius related?
A) The Schwarzschild radius is smaller than the distance from the singularity of a black hole to the event horizon. B) The Schwarzschild radius is equal to the distance from the singularity of a black hole to the event horizon. C) The Schwarzschild radius is greater than the distance from the singularity of a black hole to the event horizon. D) The size of the Schwarzschild radius is unrelated to the distance from the singularity of a black hole to the event horizon. E) The size of the Schwarzschild radius is proportional to the distance from the singularity of a black hole to the event horizon.
Which of the following critical features of the heliocentric model leads to Venus exhibiting a full range of phases?
A) When Venus is closer to the Sun, it moves faster. B) Venus passes on the far-side of the sun from the Earth's perspective. C) Venus physically distorts from a sphere as it orbits the sun.
A segment of wire of total length 3.0 m carries a 15-A current and is formed into a semicircle. Determine the magnitude of the magnetic field at the center of the circle along which the wire is placed
a. 1.6 ?T b. 4.9 ?T c. 1.0 ?T d. 9.8 ?T e. 15 ?T
The intensity level of a power mower at a distance of 1.0 m is 100 dB. You wake up one morning to find that four of your neighbors are mowing their lawn 20 m from your open bedroom window. What is the intensity level in your bedroom?
A) 80 dB B) 104 dB C) 400 dB D) 50 dB E) 40 dB