If a person found a fossil and presented it to William Smith, what would the scientist be able to conclude about that fossil?
A) which type of animal it was and where it had lived
B) which layer the fossil had come from and where that layer was exposed
C) where the fossil was found and what type of animal it was
D) when the animal had lived and which layer it had come from
Answer: B
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Earthquakes can do a lot of damage to buildings because they
A) occur frequently. B) are hard to predict. C) generate waves that carry a lot of energy. D) all of the above
Thunder is caused by
a. the collision between two thunderstorms with opposite electrical charge. b. the rapid heating of air surrounding a lightning channel. c. the explosion that occurs when + and - charge collide and neutralize each other. d. turbulent wind motions inside the thunderstorm. e. microbursts within the atmosphere.
The ____________________ cycle concerns the variations in Earth's axis tilt
Fill in the blank(s) with correct word
What percent of the Sub-Saharan Africa population is under the age of 15 years?
A) 43% B) 55% C) 70% D) 25% E) 63%