Which of the following best matches the description?Increases in the amount of material at successively higher trophic levels.
A. macronutrients
B. organophosphate
C. micronutrients
D. chlorinated hydrocarbon
E. biomagnification
F. biocide
G. persistent pesticide
H. rodenticide
I. micronutrient
J. pheromone
K. hard pesticide
L. herbicide
M. soft pesticide
N. weed
O. auxin
P. fungicide
Q. macronutrient
Answer: E
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A. External; internal B. Incidental; external C. Incidental; indirect D. Indirect; incidental E. Internal; external
Why were the citizens of Heimaey, Iceland, successful in stopping the lava flow that threatened their harbor?
A) They had a ready supply of water with which to chill the lava. B) The Icelandic air force bombed the lava flows. C) A giant sea wall was constructed to stop the lava flows. D) The lava was rhyolitic in composition.
Which of the four numbered features on this figure is the youngest?
A. 1 B. 2 C. 3 D. 4
Based on the yearly average values, calculate one person's residential electricity needs for a year.
A. 4,440 kWh per year B. 130 kWh per year C. 1,560 kWh per year D. 370 kWh per year