When did over 96% of marine and 70% of land species on Earth become extinct?
A. K-T boundary
B. T-C boundary
C. P-T boundary
Answer: C
Environmental & Atmospheric Sciences
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She does work on a cart loaded with oranges. If she does this work in one-third the usual time, she expends
A. the usual power. B. three times the usual power. C. one third as much power. D. need more information.
Environmental & Atmospheric Sciences
What describes the merging of two waves that results in a wave exceeding the size of each individual wave?
a. dispersion b. cumulative wave train c. destructive interference d. conversion e. constructive interference
Environmental & Atmospheric Sciences
What type of rock is shown in this photograph from the Investigation?
A. volcanic rocks, probably basalt B. metamorphic rocks C. sedimentary rocks D. granite
Environmental & Atmospheric Sciences
Mid-ocean ridges are a source of volcanic activity.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences