Kidneys purify pure blood and send it back to the rest of the body. What systems are interacting in this scenario? A.)Excretory & Circulatory
B.)Excretory & Digestive
C.)Excretory & Endocrine
D.)Excretory & Integumentary

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?