Why is photosynthesis inhibited at the very top layer of the ocean surface?
a. The salinity is too high.
b. There is too much light.
c. Oxygen is too low.
d. Oxygen is too high.
e. There are too many plankton in the water.
b
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Where do the largest debris flows and rock slides occur?
A) in wide, broad canyons B) in steep, narrow canyons C) on steep mountains or hillsides D) on volcanoes
Human populations are growing in areas prone to seismic activity and near active volcanoes
Indicate whether the statement is true or false
The Sun emits its greatest intensity of radiation in the
a. visible portion of the spectrum. b. infrared portion of the spectrum. c. ultraviolet portion of the spectrum. d. x-ray portion of the spectrum. e. gamma ray portion of the spectrum.
During hail formation, rain drops circulate repeatedly above and below the freezing level in clouds, adding layers of ice until they fall under the force of gravity
Indicate whether the statement is true or false