B. are more difficult to control than point sources. This is because A. is wrong (point source), and C. is wrong, because it doesn't necessarily cost less or more to identify the sources. D. may be right, as non point sources are natural, such as snow melts or rain.
What are the characteristics of continental tropical air masses?
ANSWER:
They have warm, moist air.
Which description refers to stratus clouds?
ANSWER:
Covers all or most of the sky.
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Answer:
E. The survival of increasingly numbers of resistant insects
Explanation:
Answer:
Explanation:A circle is merely a special case of an ellipse. However, the planets do not quite move in ellipses either. The increased kinetic energy of a planet as its distance from the Sun decreases causes it to behave as though it had a greater mass, which results in the point of the orbit furthest from the Sun precessing.