7/22/14
Unit 3 Sec. D Summary HW
1) Biomolecule is the large
organic molecule found in living systems.
2) a. Natural gas
b. Coal
c.
Petroleum
3) Coal, petroleum, and
natural gas.
4) The sun.
5) People needed more ways for transportation,
used petroleum for gas for the cars, allowed easier and faster transportation.
Unit 3 Sec. C Summary HW 3
17) a. Cellular respiration and as cutting
timber are burned CO2 is released into the atmosphere.
b. The
lithosphere and atmosphere
c.
Deforestation and fossil fuel emissions
18) Carbon enters the atmosphere through
respiration, diffusion happens in the atmosphere into the hydrosphere, the
lithosphere stores the carbon, and gets released into the atmosphere.
19) CH4 + 2 O2
–––> CO2 + 2 H2O
20) a. As the water evaporates
it gets even hotter.
b. Clouds can block the sun.
b. Clouds can block the sun.
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