Which is an abiotic factor in a marine ecosystem?

Which of these is most like a closed system that does not allow transfers in or out of the system? A Planet Earth B A coral reef C A school D The human heart

Approximately how much of Earth's surface is covered by water? 30 percent 70 percent 40 percent 50 percent

What Is DNA stand for.

Which is the first indicator of an infection in the body? A. an increase in the number of RBCs in the blood B. an increase in the number of WBCs in the blood C. an increase in the number of platelets in the blood

Compare genotypes and phenotypes for pea plants.

During evolution, the idea proposed by Darwin that some characteristics make organisms more or less likely to survive is called

Which of the following pairs reflects a relationship to addiction? a. medulla oblongata-craving b. cerebellum-reward c. hippocampus-craving d. nucleus accumbens-reward

The difference between generative writing and drafting is: a. generative writing brings up ideas, drafting develops one idea. b. generative writing develops one idea, drafting revises the idea. c. generative writing is more specific than drafting. d.

How big is a blood cell? house does its size compare to dust mites and then to the e. coli bacteria

What do DNA stand for