Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 21.3, Problem 4SC
To determine
The reason for the presence of oxygen in the atmosphere.
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Students have asked these similar questions
One proposed method of mitigating climate change is the planting of large numbers
of trees. How would this reduce the problem of global warming?
Trees reflect additional sunlight back into space before it strikes the ground,
reducing the global temperature.
Trees absorb carbon dioxide, reducing the amount of carbon dioxide in the
atmosphere and thereby reducing the greenhouse effect.
Trees prevent soil erosion, and soil erosion contributes to the greenhouse effect.
Trees release water vapor into the atmosphere, increasing the cloud cover and
reducing the global temperature.
2. Gross primary productivity in an equatorial grassland is 8,000 cal/m'/yr. This particular region has such a
high efficiency that the grasses use only 75% of the energy in cellular respiration. Calculate the energy
(calories) that is available to secondary consumers from 1 m of grassland over a year's period.
2.
8000 x75% =6000 callm/yr
0 callm²lyr
1. What happens to the solar energy absorbed by plants during photosynthesis? *
OA. It is recycled by plants and returned to the atmosphere.
O B. It is converted into oxygen
) C. It is stored as heat within the plant for cellular functions.
D. It is transformed into chemical energy
Chapter 21 Solutions
Integrated Science
Ch. 21.1 - Prob. 1SCCh. 21.3 - Prob. 2SCCh. 21.3 - Prob. 3SCCh. 21.3 - Prob. 4SCCh. 21.3 - Prob. 5SCCh. 21.8 - Prob. 6SCCh. 21.8 - Prob. 7SCCh. 21.9 - Prob. 8SCCh. 21.9 - Prob. 9SCCh. 21.10 - Prob. 10SC
Ch. 21.11 - Prob. 11SCCh. 21.11 - Prob. 12SCCh. 21.12 - Prob. 13SCCh. 21.12 - Prob. 14SCCh. 21.12 - Prob. 15SCCh. 21 - Prob. 1CQCh. 21 - Prob. 2CQCh. 21 - Prob. 3CQCh. 21 - Prob. 4CQCh. 21 - Prob. 5CQCh. 21 - Prob. 6CQCh. 21 - Prob. 7CQCh. 21 - Prob. 8CQCh. 21 - Prob. 9CQCh. 21 - Why has Lamarcks theory been rejected?Ch. 21 - Prob. 11CQCh. 21 - Prob. 12CQCh. 21 - Prob. 13CQCh. 21 - Prob. 14CQCh. 21 - Prob. 15CQCh. 21 - Prob. 16CQCh. 21 - Prob. 17CQCh. 21 - Evolution is a fact. Evolution is a theory....Ch. 21 - Prob. 19CQCh. 21 - Prob. 20CQCh. 21 - Prob. 21CQCh. 21 - Prob. 22CQCh. 21 - Prob. 23CQCh. 21 - Prob. 1PEACh. 21 - Prob. 2PEACh. 21 - Prob. 3PEACh. 21 - Prob. 4PEACh. 21 - Prob. 1PEBCh. 21 - Prob. 2PEBCh. 21 - Prob. 3PEBCh. 21 - Prob. 4PEB
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