What results when nitrogen dioxide and hydrocarbons react in the presence of sunlight?
a. photochemical smog
b. industrial smog
c. a thermal inversion
d. acid rain
e. particulate fallout
A
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Rubbery cartilage, calcium-hardened bone tissue, lipid-storing adipose tissue, and blood are examples of specialized
____________________ tissues. Fill in the blank(s) with the appropriate word(s).
A characteristic only shared by angiosperms and gymnosperms is
A. vascular tissue. B. fruit production. C. protection of the embryo. D. the production of seeds.
Myocardial infarction, also called a heart attack,
A) is caused by excessive blood pressure in the heart. B) actually causes no permanent damage to the heart. C) is unrelated to cigarette smoking. D) is the damage or death of cardiac muscle tissue.
What is likely to be the greatest challenge facing the zoned reserve systems of Costa Rica?
A) high predation by jaguars B) the impossibility of ecotourism C) decreasing soil erosion D) a growing human population