What happens at higher altitudes?
a. The concentration of oxygen decreases.
b. The concentration of carbon dioxide increases.
c. The partial pressure of oxygen decreases.
d. The partial pressure of carbon dioxide increases.
e. There is no change in the concentration or partial pressures of atmospheric gases.
c
You might also like to view...
Organelles are __________
A. structures that contain the genetic material. B. membrane-bound compartments of eukaryotic cells. C. the region that contains the DNA in prokaryotic cells. D. the outer, rigid covering of a prokaryotic cell.
The region of the earth inhabited by living organisms is called the
A. niche. B. ecosystem. C. community. D. biosphere.
Many plants wind up with a Na+ concentration that is considerably lower than that of the surrounding soil. What plays a key role in allowing for such a difference to exist?
a. endodermis b. tonoplast c. aquaporin d. water potential
A farmer has grown strawberries successfully for years in field A. He recently expanded the crop into previously unused land in fields B and C. The yield from field B is comparable to A, but the yield from field C is inexplicably low. As a microbiome expert, what might you predict about the soil of fields A, B, and C?
A. Field C may be lower in AM fungi compared to soil from fields A and B. B. Fields A and B may be free from ectomycorrhizal fungi. C. Field C may have large amounts of microcystin due to algae blooms. D. Fields A and B may have benefited from the absence of nitrogen-fixing bacteria.