Explain how fossil fuel use in the us makes us vulnerable to the demands of foreign countries.

Well the US doesn't naturally have a lot of fossil fuels so we rely on other countries who do have fossil fuels. So if we aren't that friendly with Saudia Arabia (they have a bunch of oil) then they can hike up the prices or cut us off from their oil supply completely which would cripple the US severly. So with that being said, we NEED other countries, and the big question is when will they not NEED us. At any point in which they feel that they don't need us they can just cut us off, which would be bad.

Hope that helps :)

The United States imports much of its petroleum from foreign countries who can set the price. This leaves the United States vulnerable to price spikes and artificial shortages as happened during the 1970's oil crisis.

Explanation:

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.