Question

which of the following is the most abundant gas in earths atmosphere? * 1 point
nitrogen
oxygen
carbon dioxide
argon
if the ozone layer were significantly depleted, what would be the most direct * 1 point
consequence for life on earth?
increased exposure to harmful ultraviolet radiation
lower average global temperatures
increased frequency of earthquakes
more frequent and intense hurricanes
water vapor is another minor component of the atmosphere. its
concentration varies, but it is essential for the formation of: * 1 point
the ionosphere.
the magnetosphere.
clouds and precipitation.
the exosphere.
which of the following best defines the hydrosphere? * 1 point
the layer of gases surrounding the earth.
the solid, rocky outer layer of the earth.
all the water on, under, and above the surface of the earth.
the living organisms that inhabit the earth.

Explanation:

1. Nitrogen makes up about 78% of Earth's atmosphere, more than any other gas.
2. The ozone layer absorbs most of the Sun's harmful ultraviolet radiation. Depletion would lead to increased exposure.
3. Water vapor condenses to form clouds and is essential for precipitation.
4. The hydrosphere encompasses all water on, under, and above Earth's surface.

Answer:

1. Nitrogen
2. Increased exposure to harmful ultraviolet radiation
3. Clouds and precipitation
4. All the water on, under, and above the surface of the Earth