Which one of the following elements is found in nonliving systems but not found in more than trace amounts in living systems? a. hydrogen b. oxygen c. carbond. silicone. calcium

In what order does blood flow through the body and heart? A. Right atrium, left atrium, lungs, right ventricle, left ventricle, body. B. Right atrium, left ventricle, lungs, left atrium, right ventricle, body. C.

Why do you suppose the population of deer declined in 1925

Which is least likely to be a symptom of lymphedema

Trevor dropped a bit of olive oil on the kitchen floor while he was cooking. Later, his mother slipped on the spot where he dropped the oil and fell. What can Trevor infer based on his observations? A.

two parents with normal phenotypes have a daughter who genetically inherited a disorder. Explain how this is possible.

How many different types of gametes can be produced by a plant with genotype aabbccddeeff?

What forms the rungs of the ladder of DNA?

Cuticular scale patterns in human head hairs tend to be very regular. Group of answer choices True False

Does Mitosis ever stop in cells? Explain your answer

Trichodesmium is a nitrogen-fixing cyanobacteria. Why might this cyanobacteria be important to other organisms in nitrogen-poor waters? They convert atmospheric nitrogen (N2) to organic compounds including ammonia (NH3).