How long does an ENSO event typically last?

a. 1 month
b. 6 months
c. 1 year
d. 3 years
e. 6 years


c

Environmental & Atmospheric Sciences

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Animals had begun to inhabit the land before plant species evolved

a. True b. False

Environmental & Atmospheric Sciences

There are significant differences in the leading causes of death between developed and developing regions of the world. The biggest difference is in the category of frequency of ________

A) lung diseases B) E. coli illnesses C) cancer D) cardiovascular diseases E) childhood diseases

Environmental & Atmospheric Sciences

Seaweeds are ____.?

A) ?vascular plants B) ?unicellular algae C) ?multicellular algae D) ?phytoplankton

Environmental & Atmospheric Sciences

Why does a glowing splint of wood burn only slowly in air, but rapidly in a burst of flames when placed in pure oxygen?

A. Pure oxygen is able to absorb carbon dioxide at a faster rate. B. Oxygen is a flammable gas. C. A glowing wood splint is actually extinguished within pure oxygen because there's no room for the smoke to expand. D. There is a greater number of collisions between the wood and oxygen molecules.

Environmental & Atmospheric Sciences