Which of these is a cost of fossil fuels? a) they are inconvenient to use b) they damage the environment when oil spills c) they lessen the effects of global warming d) they add very few pollutants to the air when burned

The correct answer is (B) They damage the environment when oil spills.

Fossil fuels are the natural resources that provide energy to the human beings. There are many advantages of fossil fuels but it has some disadvantages as well. One of the main disadvantages of fossil fuel is that they can damage the environment when oil spills. Huge tankers carry the oil from one place to another and any accidental case can led to oil spill. The cost of this is disastrous. It not only harmful for the human beings near it but it is also harmful to the sea animals and fishes. The water birds gets coated with the oil and they are unable to fly. The animals like seals and penguins can ingest the oil which can be deadly for them.This can kill hundreds of animals.

answer; /// i believe that the correct answer is ( monophasic ); ethinyl estradiol- ethynodiol diacetate is a monophasic oral contraceptive agent; ///

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."