The Permian extinction killed approximately ____ of all marine invertebrate species
a. 54%
b. 66%
c. 70%
d. 83%
e. 96%
e
Environmental & Atmospheric Sciences
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Which gas, contributed in part by burning fossil fuels, is used by scientists as an indicator of future global warming?
A) CO2 B) nitrogen C) oxygen D) hydrogen
Environmental & Atmospheric Sciences
By the end of the Permian, small mammal-like reptiles, called ____________________, evolved from the pelycosaur
Fill in the blank(s) with correct word
Environmental & Atmospheric Sciences
Earthquakes and volcanoes are both phenomena produced by the:
A) atmosphere. B) hydrosphere. C) biosphere. D) geosphere.
Environmental & Atmospheric Sciences
Which of the following is secreted by the kidneys?
A) angiotensin B) angiotensinogen C) renin D) none of these
Environmental & Atmospheric Sciences