Explain what distinguishes primary and secondary consumers.

Arthropods periodically shed and discard their exoskeletons as they grow in a process called a. segmentation. b. molting. c. reproduction. d. metamorphosis.

Which of the following properties of DNA was discovered by James Watson and Francis Crick

What path does food make

A stable ecosystem can have high biodiversity because each species in that ecosystem?

Endogenous pyroge: a) is released by infection-fighting leukocytes and acts on muscle tissue. b) is released by the hypothalamus and acts on infection-fighting leukocytes.

Describe how C. parvum obtains the glucose it needs for glycolysis after it has infected another cell

If earth didn't rotate what would be one major obstacle life would have to overcome

What are two key characteristics of cancer cells?

Why does the energy decrease as we go along the food chain from producers to tertiary consumers?

Whats a biotic factor scientists should control?