It is now known that, overall, clouds:a
have a net warming effect on climate
b. have a net cooling effect on climate
c. have no net effect on climate
d. are the single most important feature in determining climate
b
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Phthalates, once widely used in plastic teething rings for infants, have been implicated by animal studies as carcinogenic substances and hormone mimickers.
Answer the following statement true (T) or false (F)
In the U.S., solid wastes are stored in ________ landfills.
Fill in the blank(s) with the appropriate word(s).
Which of the following best matches the description?Nutrient that is required by plants in relatively large amounts.
A. herbicide B. rodenticide C. micronutrient D. persistent pesticide E. biocide F. macronutrients G. weed H. chlorinated hydrocarbon I. macronutrient J. biomagnification K. pheromone L. fungicide M. organophosphate N. micronutrients O. soft pesticide P. hard pesticide Q. auxin
Which biome is characterized by little rainfall, low grasses and shrubs, and cold temperatures?
A) grasslands B) deciduous forest C) savanna D) desert E) tundra