Which of these is a biotic factor of an ecosystem?

a. the temperature of water in a stream

b. the amount of water vapor present in a rain forest

c. the bacteria that live in the intestine of a rabbit

d. the rocks that provide cover for a rattlesnake

Depletion of nonrenewable resources is often a result of

What type of process wears away pieces of sediment from rock? A. Metamorphic B. Depositional C. Frictional D. Mystical

Select the correct answer from each drop-down menu. Sodium and potassium ions are essential for muscle contractions of the heart. The ions are transported using a pump, which obtains energy by the breaking of.

Describe the characteristics of an endospore-producing bacteria that make it an ideal candidate for bioterrorism but an undesirable intruder in a hospital setting

If worldwide deforestation is not regulated, what could most likely result?

Which of these is an example of an endoparasitic relationship? O A. A tapeworm living in an animal's intestine O B. A rabbit eating lettuce in a farmer's garden O C. A tick living in an animal's fur coat O D. A snake eating a mouse in a cornfield

Why is the presence of organic material in the soil important? A) It wards away plant eating organisms. B) It increases plant growth. C) It increases sunlight absorption. D) It increases water absorption.

Which derived characteristic is shared by at least four organisms? Large brain Lungs Mammary glands Placenta

Question 2 For an object to remain at rest, which of the following must be true? A. The forces on it are balanced B. There is no friction C. Gravity doesn't act on it D. The object has no mass

Identify another invertebrate chordate other than hagfish.