What are disadvantages of using fossil fuels to generate electricity? check all that apply. eventually, fossil fuels will be used up. substances in the smoke from power plants provide health benefits to people who inhale them. obtaining fossil fuels harms the environment. poisonous metals are present in the ash from coal-burning power plants. in some places, coal is abundant.

The fossil fuels are obtained by decomposition of organic matter buried thousands of years ago. So we have a limited supply of fossil fuels available for use and are considered as non renewable source of energy. We cannot generate them again, once exhausted.

a) so eventually the fossil fuels will be used up

b) False : the burning of fossil fuels generate only harmful gases and not useful for health

c) True: extraction of fossil fuel definitely harms the environment.

d) True: there are poisonous metals like aresenic in the ash produced by burning of coal

e) False: this is not a disadvantage that coal is abundant in some places

a,c,d

Explanation:

I just did the assignment, this was the answer on edgenutiy. hope this helps.

that tool would be a compass

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally