I also need these answers too, I really need these solved

Which are forms of nitrogen that are usable by humans

Select the correct answer. in the image, if the washcloth represents consumed food, which organ of the digestive system correctly represents the action performed by the hands? hands squeezing water from a washcloth a. esophagus b. large intestine c. liver d. mouth

Apart of an ecosystem that can restrict the growth of a population is referred to as