The gases that make up 99% of Earth's atmosphere are

A) nitrogen and carbon dioxide.
B) oxygen and carbon dioxide.
C) oxygen and nitrogen.
D) oxygen and hydrogen.


C

Environmental & Atmospheric Sciences

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Briefly describe the climatic variations that have occurred since the beginning of the Pleistocene epoch to the present day.

What will be an ideal response?

Environmental & Atmospheric Sciences

Workers in uranium mines have experienced extremely high incidence of

A. Strokes B. Skin cancer C. Emphysema D. Black lung disease E. Lung cancer

Environmental & Atmospheric Sciences

Mount Fuji is an example of:

a) Shield volcanoes b) Stratovolcanoes (or composite cones) c) Cinder cones (or scoria cones) d) Mud volcanoes e) Lava domes

Environmental & Atmospheric Sciences

In AMP, ADP and ATP the phosphate is linked to ribose through which carbon atom?

A) C-1 B) C-2 C) C-3 D) C-5

Environmental & Atmospheric Sciences