At solar noon, the Sun reaches its ____
a. aphelion
b. perihelion
c. analemma
d. equinox
e. zenith
e
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An acid is a chemical compound that gives off hydrogen ions (H+) to a chemical reaction.
Answer the following statement true (T) or false (F)
How do the tropical rain forests differ from the temperate deciduous forests?
A. Rain forests have more foliage at ground level than deciduous forests. B. Rain forests have fewer lianas than deciduous forests. C. Deciduous forests have a slower rate of decomposition than rain forests. D. Rain forests have lower species diversity than deciduous forests. E. Deciduous forests have a dense canopy of broad leaves, compared with an open canopy of the rain forest.
Any solution with a pH of greater than 7.0 is acidic.
a. true b. false
What is the Southern Oscillation?
A) the periodic intense cyclonic storms from Antarctica B) the weather pattern that changes tropical cyclone activity in the southern ocean C) the 10-year cycle in winter storm activity in the temperate zone of the Southern Hemisphere D) the intermittent switch from El Niño to La Niña conditions in the equatorial Pacific