Give two reasons why lightning kills fewer people now than in the past
What will be an ideal response?
Answer: Any two of these:
(i) shifts in population patterns
(ii) the public is more aware of the danger
(iii) improved warnings and detection
(iv) advances in medical aid for victims
(v) more reliable electrical systems in homes and businesses
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Cnidarians exhibit bilateral symmetry, an advancement from the phylum Porifera
a. True b. False
Alluvium is to streams as ____________________ is to glaciers
Fill in the blank(s) with correct word
Which of the following affects about 83% of the earth's surface, excluding Antarctica?
A. The presence of cities B. Human activities in general C. Agricultural use D. Landfills and waste disposal E. Occupation by power plants
Which of the following cause ground water to flow?
A) kinetic energy and pressure B) volume and elevation C) elevation and potential energy D) potential energy and pressure