Because magnetic force on a moving electron is always perpendicular to its direction of motion, magnetic force cannot change an electron's

A. speed and direction.
B. direction.
C. speed.
D. none of the above


Answer: C

Environmental & Atmospheric Sciences

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Cyclone initiation and growth is termed ____________________

Fill in the blank(s) with correct word

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What is the most abundant larger zooplankton?

a. Ctenophores b. Molluscs c. Copepods d. Rhodophytes

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The IPCC concludes that temperature increases, sea-level increases, and rainfall changes are effectively irreversible for a period of "________" after CO2 emissions are stabilized

A) days B) weeks C) months D) years E) centuries

Environmental & Atmospheric Sciences

In what region of Sub-Saharan Africa is desertification most severe?

A) the Kalahari B) the Sahel C) the Congo D) the Horn of East Africa E) South Africa

Environmental & Atmospheric Sciences