The valley of the ________ River was the center of a Vietnamese kingdom by the first century B.C.

A. Red
B. Mekong
C. Chao Phraya
D. Irrawaddy


A. Red

Environmental & Atmospheric Sciences

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Briefly explain why there is so much oil in the Persian Gulf region. What will be an ideal response?

Environmental & Atmospheric Sciences

In arid climates, soils are thin and soil water tends to move ________.

A. downward B. laterally C. sluggishly, if at all D. upward E. only within a given soil horizon

Environmental & Atmospheric Sciences

Hurricanes are called major hurricanes if ________.

A. last more than 4 days B. are classified as category 3 or above on the Saffir-Simpson Scale C. they have air pressures greater than 980 millibars D. the wind speeds are at least 120 km/hr E. they make landfall at high tide

Environmental & Atmospheric Sciences

The zone between high and low tides coincides with the ________ zone

A) abyssal B) bathyal C) hadal D) littoral E) subneritic

Environmental & Atmospheric Sciences