I just took a test in school today. What question was I asked?

Question I was asked: In humans, a trait can be determined by one pair or many pairs of

I just took a test in school today. What question was I asked?

Question I was asked: Which is most likely a cancer treatment?

I just took a test in school today. What question was I asked?

Question I was asked:
A spring-fed stream forms a pond that contains watercress plants, minnows, and crayfish. The pond receives 5 hours of direct sunlight every day. Which of the following is an abiotic factor in this ecosystem?