20.3. Pollution
A subsection of Biology, 0610, through 20. Human influences on ecosystems
Listing 10 of 168 questions
Carbon dioxide forms approximately 0.04% of the atmosphere. shows part of the carbon cycle. plants feeding death death animals coal, oil, gas carbon dioxide decomposers A C D B Complete Table 6.1 by naming the processes labelled A to D in . Table 6.1 letter on name of the process in the carbon cycle A B C D Complete the sentences by writing the missing words in the spaces. Carbon dioxide is a greenhouse gas. Greenhouse gases trap in the atmosphere. Water vapour is the most common greenhouse gas in the atmosphere. Another greenhouse gas is methane which is released from and . Carbon dioxide and methane released from human activities over the past 200 years have contributed to the greenhouse effect. Other atmospheric pollutants can cause acid rain. One of these is which is a waste gas from some power stations. One source of pollution in both aquatic and terrestrial ecosystems is plastics.
0610_w19_qp_42
THEORY
2019
Paper 4, Variant 2
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Carbon is a part of many biological molecules. is a diagram of part of the carbon cycle. carbon compounds in plants carbon compounds in decomposers carbon compounds in C CO2 in the atmosphere carbon compounds in D B A combustion decomposition feeding State the name of the process labelled A. State the name of the process labelled B. State the name of C. State the name of D. Describe the undesirable effects of deforestation. Methane is a gas that pollutes the atmosphere. State one source of the methane that pollutes the atmosphere. State the effects of an increased concentration of methane in the atmosphere.
0610_w21_qp_33
THEORY
2021
Paper 3, Variant 3
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Questions Discovered
168