Which body structure do earthworms use for gas exchange?

A. setae

B. gills

C. skin

D. lungs

Which pollutant is most commonly released into waterways by families and individuals? a. Laundry detergent b. Hot water that's been used to cool heavy machinery. c. Pesticides and fertilizers d. Chemicals like benzene and PCBs

Suppose you were planning to use liposomes in an attempt to deliver drugs to a particular type of cell in the body, for example, a fat or muscle cell. Is there any way you might be able to construct the liposome to increase its target specificity?

Scientists can determine if oxygen existed in Earth's Archean atmosphere by A. determining the amount of outgassing that occurred. B. looking for oxidized iron in rocks. C. looking at the amount of salt content in rocks. D.

If the temperature of our oceans continues to rise, what possible long-term effect will this have on marine organisms? The geographic range of phytoplankton will decrease thus increasing the base of the marine food chain.

Which of the following could be considered a reliable source of scientific information? A. A scientist's presentation of experimental results at a scientific conference. B. A sales representative's glowing description of the benefits of a new drug.

What are the three types of eating disorders discussed in your reading materials? a. anorexia, bulimia, binge-eating b. anorexia, binge-eating, starvation c. anorexia, binge-eating, chronic nervosa d. anorexia, bulimia, starvation?

Gel like substance inside the cell but outside the nucleus

The graph of a function increases twice as much over each subsequent equally sized interval. Which of the following could be the parent function of the graphed function?

Fenway park, home of the boston red sox, is situated on land that was once a fen, a kind of wetland. the replacement of the fen is an example of what? pollution overexploitation habitat destruction competition

Explain how the terms set below is related: Heterotroph, omnivore, carnivore