Which of the following is a primary product?

a. a producer, like algae
b. a carnivore, like a lion
c. an omnivore, like a human
d. a detritivore, like an earthworm

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

Along what geographical feature are most of the oil producing regions located

What term describes a doctor who becomes a specialist by meeting standards beyond those of getting a license and passing a test in the specialty area?