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Since plants convert carbon dioxide and grow because of the carbon it helps the plants and when that happends where there are plants there is more air produced for us to breath.It can also change the climate because of the levels of air that is produced by plants is in the atmosthphere.So they know because there is more air and because where there are plants there is more fresh air to breath.Also plants take the carbon dioxide and clean the carbon in the air causing us to breath good air.
Secondary sources draw on primary sources. They may comment on primary sources, or use the evidence from primary sources to construct an argument. Books or journal articles that analyze, critique, or synthesize a range of sources are examples of secondary sources.
Answer:
b. the political system of the united states was based on rule by the ... the united states system was federalism' the soviet union was founded as a republic. ... webew7 and 2 more users found this answer helpful ... Get more out of Brainly ... expose me but when i give receipts they going to say i am capping.
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I would say Dust Bowl most likely
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