Of the five mass extinctions, the ________ extinction eliminated greatest percentage of genera.

A. Ordovician
B. Triassic
C. Cretaceous
D. Permian


Answer: D

Environmental & Atmospheric Sciences

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Temperature changes from one year to the next are called ____________________ temperature variations

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences

Life-cycle analysis is useful because energy and environmental hazards are associated with ________ of products.

A. Production, but not use B. Production and use, but not disposal C. Production, transport, use, and disposal D. Use as well as production E. Both transport and production

Environmental & Atmospheric Sciences

An infant gains 10 pounds. Why would you consider this to be an example of a chemical change?

What will be an ideal response?

Environmental & Atmospheric Sciences

Poland shares the humid continental climate type with:

A) the United Kingdom B) Portugal C) Scotland D) Austria

Environmental & Atmospheric Sciences