Which of the following ecological units includes abiotic factors?

A. A community

B. An ecosystem

C. A population

D. A trophic level

Which ocean resources are second in economic value to oil

Suppose that in plants, smooth seeds (S) are dominant to wrinkle seeds (s) and tall plants (T) are dominant to short plants (t). A tall plant with smooth seeds was backcrossed to a parent that was short and wrinkle.

What was the "Plundering Time"? A. a time when Maryland planters turned toward cultivating tobacco B. a time when the King of England granted Maryland as a charter company C.

Which of these is most likely to become a carbon film? A dinosaur leg bone a sea creature's shell a flowering plant a tree trunk

What type of information is being presented by a scientist who has a reason for presenting information a certain way?

An educate guess about the meaning of the term "chlorophyll"

All BUT one of the phrases describe a function of the human skeletal system. That is A) allows for movement. B) protects internal organs. C) produces red blood cells. D) filters unwanted substances.

Why is it important for cell division to occur?

Which of the following is true about the hierarchy or organization of life? (Check all that apply) A. Changes at the lowest level can affect the more complex levels. B. Cells make up tissues. C. Cells are made up of macromolecules. D.

Unwrapped food placed in a freezer experiences dehydra - tion, known as "freezer burn." why?