Runoff of rainwater is minimized on
a. hard surfaces like parking lots.
b. compacted ground.
c. level, spongy ground.
d. steep slopes.
b
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What type of cell signaling uses neurotransmitters to innervate its target organ?
What will be an ideal response?
The readout recorded in Pavlov's experiments on learning and feedforward regulation was:
A. amount of food the dogs ate. B. how quickly the dogs ate. C. how long the metronome ticked. D. amount of saliva collected.
In flowering plants, companion cells are connected via plasmodesmata to ____
a. trichomes b. tracheids c. sieve tube elements d. guard cells e. vessel members
Transport of two different substances can be linked. If the transport is in the same direction it is called ________; if the transport is in opposite directions it is called ________.
Fill in the blank(s) with the appropriate word(s).