The world's 30,000 known species of spiders
a. kill more livestock with poisonous bites than any other threat.
b. have to be controlled in order for integrated pest management to work properly
c. are a threat not only to livestock, but also to rural farmers because they nest in sheds where equipment is stored and later retrieved.
d. kill far more crop-eating insects every year than humans do by using chemicals.
e. Are at the bottom of the food chain in agricultural settings and so provide important food for birds that control caterpillar populations.
D
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Resources in the United States' EEZ include ________
a. manganese nodules b. fish and shellfish c. all of these choices d. metallic sulfides
The four major subsystems (spheres) of the Earth system (list in alphabetical order) are the ______________, the_______________, the_______________, and the________________
Fill in the blank(s) with correct word
The process in which a denser oceanic plate is forced deep below a lighter continental plate is known as ____________________
Fill in the blank(s) with correct word
From what process do all organisms use energy to power their physical, behavioral, and reproductive functions?
A) photosynthesis B) cell division C) anaerobic respiration D) chemosynthesis E) cellular respiration