During the end Permian mass extinction, the die-offs were so extensive, ________ or more of animal species went extinct.
A. 47%
B. 25%
C. 80%
D. 70%
Answer: C
Environmental & Atmospheric Sciences
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The toxicity of a substance is a measure of its
A. harmfulness. B. biodegradability. C. dosage. D. mass. E. proliferation.
Environmental & Atmospheric Sciences
Pillow structures, pillow-shaped rounded masses, form where lava is extruded under water.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences
Lakes that look like prayer beads within abasin that are connected by a stream flowing down a glacially carved valley are called _______________ lakes
Fill in the blank(s) with correct word
Environmental & Atmospheric Sciences
The internal regular arrangement of ions or atoms in a material makes it
A. crystalline. B. non-crystalline. C. amorphous. D. None of the options are correct.
Environmental & Atmospheric Sciences