객관식
In an ecosystem, how do primary consumers benefit plants?
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48. Ecology
Introduction to Ecology
객관식
Which of the following gases are considered major greenhouse gases that contribute to the greenhouse effect?
A
Oxygen (\(\mathrm{O_2}\))
B
Methane (\(\mathrm{CH_4}\))
C
Nitrous oxide (\(\mathrm{N_2O}\))
D
Carbon dioxide (\(\mathrm{CO_2}\))
검증된 단계별 안내1
Step 1: Understand the concept of greenhouse gases. Greenhouse gases are atmospheric gases that trap heat by absorbing and emitting infrared radiation, contributing to the greenhouse effect and global warming.
Step 2: Identify the major greenhouse gases. Common greenhouse gases include carbon dioxide (\(\mathrm{CO_2}\)), methane (\(\mathrm{CH_4}\)), nitrous oxide (\(\mathrm{N_2O}\)), water vapor (\(\mathrm{H_2O}\)), and ozone (\(\mathrm{O_3}\)).
Step 3: Evaluate the gases listed in the problem. Oxygen (\(\mathrm{O_2}\)) is not considered a greenhouse gas because it does not significantly absorb infrared radiation. However, methane (\(\mathrm{CH_4}\)), nitrous oxide (\(\mathrm{N_2O}\)), and carbon dioxide (\(\mathrm{CO_2}\)) are all major greenhouse gases.
Step 4: Recall the role of each greenhouse gas. Carbon dioxide (\(\mathrm{CO_2}\)) is released through processes like fossil fuel combustion and deforestation. Methane (\(\mathrm{CH_4}\)) is emitted during agricultural activities and decomposition of organic matter. Nitrous oxide (\(\mathrm{N_2O}\)) is released from agricultural and industrial activities, as well as combustion of fossil fuels.
Step 5: Conclude that the correct answers are methane (\(\mathrm{CH_4}\)), nitrous oxide (\(\mathrm{N_2O}\)), and carbon dioxide (\(\mathrm{CO_2}\)), as they are all major contributors to the greenhouse effect.
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