As of 2009, the Persian Gulf region was believed to contain _______ percent of the world's oil reserves.

A. 50
B. 68
C. 75
D. 92


B. 68

Environmental & Atmospheric Sciences

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Which of the following terms refers to a second surge of electrons that proceeds from the base of a cloud toward the ground during cloud-to-ground lightning?

A. stepped leader B. dart leader C. return stroke D. downstroke

Environmental & Atmospheric Sciences

When basaltic lava reach the ocean, they

A) cause lava fountains at the vent on land. B) form pillow basalts. C) can flow long distances on top of the water. D) form circular calderas. E) All of these are correct.

Environmental & Atmospheric Sciences

When you remove a cold beverage from a refrigerator in a humid room, water vapour condenses on the sides of the container. Does this condensation act to warm or cool the beverage, or does it have no effect on the beverage's temperature?

What will be an ideal response?

Environmental & Atmospheric Sciences

What can serve as ice nuclei, and what are the important physical properties relevant to ice nuclei and ice formation in the atmosphere?

What will be an ideal response?

Environmental & Atmospheric Sciences