Which of the following best matches the description?Pesticide that remains active for a long period of time.
A. weed
B. chlorinated hydrocarbon
C. hard pesticide
D. auxin
E. organophosphate
F. persistent pesticide
G. pheromone
H. biomagnification
I. rodenticide
J. micronutrient
K. macronutrient
L. macronutrients
M. soft pesticide
N. biocide
O. micronutrients
P. fungicide
Q. herbicide
Answer: F
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The evolution of pesticide resistance, resurgence, and secondary-pest outbreaks are only some of the problems that result from reliance on
A) crop rotation and biological controls, which disrupt the natural dynamics of ecosystems. B) pesticides, creating the need to alternate between a pesticide and an herbicide every other year. C) rodenticides to kill weeds and insect pests and prevent the spread of viral diseases. D) pesticides, creating a never-ending pesticide treadmill and requiring new pest-fighting strategies.
Transform boundaries are classified under what type of fault?
a) reverse b) normal c) strike-slip
The mass extinction at the end of the Ordovician wiped out about half of the ____ population
A)dinosaur B)vascular plant C)non-vascular plant D)brachiopod and bryozoan E)stromatoporoid and rugose coral
Much progress in reducing atmospheric levels of lead pollution has resulted from ________
A) the development of new types of batteries that use lithium instead of lead B) new types of lead scrubbers on smokestacks that removed lead from the power plant emissions C) the elimination of leaded gasoline D) the switch from lead to graphite in pencils