Author Question: In a greenhouse, a plant would be best positioned so that its exposure to sunlight would be A) ... (Read 73 times)

storky111 · **on:** Jul 16, 2018

In a greenhouse, a plant would be best positioned so that its exposure to sunlight would be

A) within its limits of tolerance.
B) within its optimal range.
C) at its zones of stress.
D) at the photosynthetic limit.

Question 2

Technologies to reduce sulfur dioxide emissions are

A) widely used in U.S. power plants that burn coal.
B) not possible with available technology.
C) costly and experimental, but promising.
D) less important than technologies to reduce carbon dioxide pollution.