The current ice age

A) began around 38-55MYA.
B) began during the Pleistocene.
C) came about rapidly.
D) had a uniform drop in temperature.


Answer: A

Environmental & Atmospheric Sciences

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The fee-per-____ waste collection systems charge consumers for the amount of waste they throw away.

A. unit B. product C. material D. energy E. bag

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When there is an equilibrium between water in the air and water in the ocean, the air is said to be ____________________

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences

One important limitation when using potassium-argon for age-dating is that ________

A) potassium decays twice as fast as other isotopes B) potassium can only age-date rocks younger than 70,000 years old C) argon is a gas and may leak from minerals, throwing off measurements D) argon is unstable at surface conditions and easily weathered from rocks

Environmental & Atmospheric Sciences

In designing a retaining wall to support an unstable slope, the best design would be

A. any of these; all would be equally effective. B. a high, thin, impermeable wall. C. a high, thin wall with drainage holes. D. a short, stout wall at the foot of the slope.

Environmental & Atmospheric Sciences