Why is the dorsal side of a frog green with spots?

According to cell theory, which of the following best describes the role of cells in living organisms? A. cells join together to form multicellular organisms. B. cells are the basic operating units of living organisms. C.

What is the biggest difference between an ecosystem and a community? a. A community includes only one type of organism and an ecosystem includes many types. b.

How do geologist clarify rocks?

Foods are broken down into their building blocks by adding water. This would be an example of which characteristic of water?

Which of the following pieces of evidence supports the hypothesis that dinosaurs were social creatures? a. The presence of crests and frills on their skulls b. The existence of eggs demonstrating oviparity c.

DNA is an incredibly long molecule, and can extend the length of a football field. how can DNA molecule fit inside a nucleus

How do flagellates move

A client's arterial blood gas results reveal a PaO2 of 55 mm Hg. The client's admitting diagnosis is acute respiratory failure secondary to community-acquired pneumonia. What is the nurse's best action?

Which of the following is a factor that, by itself, does not promote widespread changes in allele or genotype frequencies? a. New mutation d. Migration b. Natural selection e. Nonrandom mating c. Genetic drift

Which statement is true about the factors affecting physical fitness? a. we have no control over any of the factors. b. we have total control over all the factors. c. the factors that affect physical fitness only apply to athletes. d.