What is a pheromone?

A. A new form of chemical insecticide waiting approval by the EPA
B. A strong herbicide
C. A species-specific chemical sex attractant
D. A chemical that travels in the bloodstream and controls an organism's growth and development
E. A safe, natural pesticide


Answer: C

Environmental & Atmospheric Sciences

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Explain the changes that occur in the carbon cycle and how it relates to long term changes in climate.

What will be an ideal response?

Environmental & Atmospheric Sciences

What are the annual averages for each of the past 3 years?

What will be an ideal response?

Environmental & Atmospheric Sciences

The vast open ocean is dominated by picoplankton that are efficiently grazed by ________.

A. heterotrophic dinoflagellates B. ciliates and tintinnids C. whales D. copepods

Environmental & Atmospheric Sciences

Where podzolization occurs, the soil tends to be:

a. strongly basic. b. moderately basic. c. neutral. d. strongly acidic.

Environmental & Atmospheric Sciences