What is the term describing an increase in concentration of toxic substances in organisms at increasing trophic levels
A. Biomagnifcation
B. Primary Productivity
C. Predation
D. Bioremediation
Answer: A. Biomagnifcation
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Which of the following are the oxygen-carrying proteins found in blood?
A. platelets B. red blood cells C. hemoglobin D. white blood cells
How do caves and caverns form in limestone?
What will be an ideal response?
Atmospheric greenhouse gases
A) absorb shortwave radiation and also impede the transfer of latent and sensible heat B) absorb shortwave radiation but do not impede the transfer of latent and sensible heat C) absorb longwave radiation but do not impede the transfer of latent and sensible heat D) absorb longwave radiation and also impede the transfer of latent and sensible heat
Which of the following statements about deserts and steppes is false?
a. They have similar controlling factors. b. They are located near each other. c. They both receive precipitation that is less than half of potential evapotranspiration. d. Both require special farming methods to support continuous agriculture.