The ring of muscle that controls movement of food from the stomach to the small intestine is the:

Where would the rate of erosion caused by water and gravity be the fastest? A. down the slope of a tall mountain B. down a hillside C. over an area of flat land D. in a V-shaped valley

Explain the difference between a hypothesis and a theory.

The chromosome number in human is?

People who influence the attitudes and opinions of others are said to be a. triads. c. dyads. b. leaders. d. aggregates.

The air pollution in your area is increasing by the day being the most appropriate way to solve the issue

Which conclusion does the fossil record support? A. Species have changed over time. B. Traits acquired during a lifetime are passed to offspring. C. Earth's organisms have not changed over time. D.

Based upon the pH scale, a vegetable with a pH of 5.3 would be A. neutral. B. ionic. C. acidic. D. basic.

How could the loss biodiversity affect humans

What are nongerminating seeds

Which protist is multicellular, found in warm ocean waters and has a red color due to the red photosynthetic pigments in its cells?