I think it's letter A.litter left on the field after a ball game
Bright colors such as flowers or light green bushes/trees would result in an decrease in a blackbirds population because the blackbird wouldn't be able to blend into its environment due to the dark color it has, allowing many predators to spot it. So brighter colored environments would result in the decrease of the blackbird population.
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Most nonrenewable resources are formed from organic carbon material which is heated and compressed over time, changing their form into crude oil or natural gas. The term nonrenewable resource also refers to minerals and metals from the earth, such as gold, silver, and iron.
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Dogs smell a lot better than humans, because they have more complex nose structures that allow them to follow any scent
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Mitosis and meiosis both involve duplication of a cell's dna content
