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2 years ago

Which of the following steps was necessary for the formation of all fossil fuels?

Biology

2 answers:

natima [27]2 years ago

7 0

Answer:

Heat and pressure build up on top of decaying matter was necessary for the formation of all fossil fuels.

Explanation:

Fossil fuels are different energy sources in the form of hydrocarbons, which come from older geological periods, and which can be found on or below the ground in the litho and pedosphere. According to the biogenic theory, which prevails today, the fossil fuels are the remains of ancient animals and plants that have been buried in the earth and then decomposed under high pressure and heat to their constituents (mainly carbon and carbon compounds).

The fossil fuels mainly comprise natural gas, petroleum and coal. Natural gas consists mainly of the gas methane and has a high content of the element hydrogen compared to the element carbon. Methane is found in natural gas fields together with crude oil or bound as methane clathrate. Petroleum (also called crude oil) is found in liquid form and contains a larger amount of the elemental carbon, while the non-volatile rock species also called carbon (not to be confused with the elemental carbon) contains a very large amount of the elemental carbon. Anthracite consists almost of pure carbon. All of these fuels are very important for trade. There are also other fossil fuels that are largely untapped, such as oil shale, various sedimentary rocks containing hydrocarbons.

Zarrin [17]2 years ago

5 0

Answer:

im pretty sure its the 3rd one

Explanation:

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Two heterozygous purple-stemmed plants are grown. Each parent has the genotype ANL/anl. Pollen from one of the plants is used to

patriot [66]

Answer:

A. All of the offspring plants will have purple stems.

Explanation:

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3 years ago

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Vsevolod [243]

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kramer

I’m pretty Sure it’s A sorry if i’m wrong

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1 year ago

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MrMuchimi

the correct answer is A- Reproductive isolation occurred through behavioral isolation

A process of formation of a new species from an existing species is called speciation. New species may formed due to geographical or reproductive barriers which isolates the members of a population of a species to form a new species.

In the given question, speciation in In the leopard frogs occurred due to a particular or specific call given by males to the females. The courtship call lead to reproductive isolation due to change in behavior. Such type of behavioral change will help in recognizing mates of the same species and this will act as a reproductive barrier among the other related species.

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3 years ago

Diffusion is the_______________________________________________________

Dmitry_Shevchenko [17]

Answer:

Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration.

Explanation:

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2 years ago