Assuming that humans went extinct today, do you think that they would be good index fossils? Why or why not?

What will be an ideal response?


Answer: Yes. Modern humans have only existed for 100,000 years and are geographically widespread.

Environmental & Atmospheric Sciences

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Air becomes unhealthy when the air quality index (AQI) exceeds ____

A) 1 B) 3 C) 10 D) 100

Environmental & Atmospheric Sciences

When a layer or warm air is trapped between layers of cool air above and below, it illustrates

A) a temperature inversion. B) stratospheric smog. C) the greenhouse effect. D) how high levels of ozone affect climate near the ground.

Environmental & Atmospheric Sciences

Mudflows frequently occur on young volcanoes covered with ash.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

Even the most powerful twisters seldom have winds exceeding ____ knots.?

a. ?90 b. ?125 c. ?220 d. ?300 e. ?410

Environmental & Atmospheric Sciences