Materials such as carbon and nitrogen go through cycles. The cycling of nitrogen waste materials is mostly dependent upon the role of which factor? A. trees
B. atmosphere
C. sunlight
D. bacteria

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.

The transport tubes from food came down the plant are called?

Planning along the natural slope of the land to reduce soil erosion is called