In a numbers pyramid, which trophic level usually has the smallest numbers? A. producer B. primary consumer C. decomposers D. tertiary consumer

Name the progressive reformer who pioneered public health nursing in urban neighborhoods.

Describe the difference in the pH values between the contents of the stomach and duodenum

What distinct difference did 19th century scientists notice between plant and animal cells?

Why would you reasonably expect cadmium to be a contaminant in zinc but not in silver?

Which of the fowl lowing is not an ultimate goal of science A. give explanations for natural events B. produce unchanging, absolute answer C. understand patters D. Make predictions

On the ph scale, the highestnumber means the a. substance is basic. b. substance is acidic. c. substance is neutral.

The brain region that identifies where the pain is occurring is the:

What group classifies a molecule with a structure composed primarily of monosaccharides

Which route represents the path taken by the European explorer Christopher Columbus? A) 1 B) 2 C) 3 D) 4

How do flagellates move? a. pseudopods b. cilia c. flagella d. feet