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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If we pushed the Earth closer to the Sun, it would develop a thick, CO2-rich atmosphere like Venus. All of that CO2 would come from the Earth's
a.
sea floor after the oceans evaporate
b.
mantle after the crust melts
c.
volcanic eruptions which would become more frequent
d.
polar regions after the ice caps melt
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
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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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