Why is natural gas referred to as a fossil fuel?

a. natural gas was formed from the breakdown of igneous rocks over millions of years.

b. natural gas was formed from decaying layers of plants in swamps millions of years ago. they fossilized into natural gas.

c. natural gas formed from dead marine organisms that fell to the ocean floor, were covered by ocean sediments, and broken down by bacteria into natural gas over millions of years.

d. natural gas was formed from black shales that were heated underneath by magma, thereby causing the release of natural gas.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Ablock of mass 1.5 kg slides down an inclined plane that has an angle of 15. if the inclined plane has no friction and the block starts at a height of 3 m, how much kinetic energy does the block have when it reaches the bottom? acceleration due to gravity is g = 9.8 m/s2. a. 6.8 j b. 50.9 j c. 0 j d. 44.1 j

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you