Why are substances such as coal and gasoline used as fuel sources? A. They have high kinetic energy, which can be converted into electrical or mechanical
energy
B. They have large amounts of energy stored in the chemical bonds which can be
converted into kinetic energy when combusted
C. They are able to easily make endothermic reactions, which can be harnessed and
converted into mechanical energy
D. None of the above statements are true

A.They have high kinetic energy, which can be converted into electrical or mechanical energy

Explanation:

The kinetic energy of the fast-moving water turns turbines, which drive generators that produce electricity. The energy in fossil fuels (coal, oil, gas) is Chemical Potential Energy.

a. they must be certified by the avma.

explanation:

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in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.