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How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Suppose you use three different scale to weigh a bag of organges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of organges is 2.153 lb. which of the following best decribes these results?