What is a large source of nitrogen introduced into the cycle by humans

nuclear as in the sun. It heats up the organic material until nitrogen is released as it decomposes. Nitrogen recirculates back into the air supply.

Explanation:

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…

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