Judge the following sentence according to the criteria given below. Motion in the atmosphere is fundamentally different from motion in the mantle because the atmosphere moves by convective motion and the mantle moves by conductive motion
A) The assertion and the reason are both correct, and the reason is valid.
B) The assertion and the reason are both correct, but the reason is invalid.
C) The assertion is correct but the reason is incorrect.
D) The assertion is incorrect but the reason is correct.
E) Both the assertion and the reason are incorrect.
Answer: D
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The asthenosphere is
a. the outer atmosphere b. the inner core of Earth c. a zone of hot, partly melted rock, in the crust, that has been compared to pizza dough d. a zone of hot, partly melted rock, under the mantle, that has been compared to pizza dough e. a solid region in the mantle
Some types of bacteria are extremely important in changing atmospheric nitrogen into a form of ____
A)oxygen that is released into the atmosphere B)carbon dioxide that speeds decomposition C)carbon dioxide that aids in plant growth D)soil nitrogen suitable for use by plants E)nitroglycerine for uptake by plant roots
An atom absorbs or emits only particular frequencies of light. White light bends into a glass prism and separates into a rainbow of colors. In which of these two scenarios does the electromagnetic radiation behave as a wave? As a particle?
A. Absorption of light shows particle behavior, while bending of light shows wave behavior. B. Both absorption and bending of light show particle behavior. C. Both absorption and bending of light show wave behavior. D. Absorption of light shows wave behavior, while bending of light shows particle behavior.
About ________% of the Great Barrier Reef is healthy coral
A) 10 B) 20 C) 35 D) 50