Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of dead plants and animals.
In common dialogue, the term fossil fuel also includes hydrocarbon-containing natural resources that are not derived from animal or plant sources.
These are sometimes known instead as mineral fuels.
The utilization of fossil fuels has enabled large-scale industrial development and largely supplanted water-driven mills, as well as the combustion of wood or peat for heat.
Fossil fuel is a general term for buried combustible geologic deposits of organic materials, formed from decayed plants and animals that have been converted to crude oil, coal, natural gas, or heavy oils by exposure to heat and pressure in the earth's crust over hundreds of millions of years.
The burning of fossil fuels by humans is the largest source of emissions of carbon dioxide, which is one of the greenhouse gases that allows radiative forcing and contributes to global warming.
A small portion of hydrocarbon-based fuels are biofuels derived from atmospheric carbon dioxide, and thus do not increase the net amount of carbon dioxide in the atmosphere.
Answer:
MACs, or membrane attack complexes, are used in the complement system.
Explanation:
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<span>Which level of organization is the highest? It would be the tissue if you are describing the broadest category
</span>
<span>In the liver, bile salts
are formed. <span>Because
of their low surface tension, this contributes to the emulsification of fats found
in the intestine and their absorption from the GI tract. These are bile’s
components. It is because of the bile salts which give bile the ability to
emulsify, mix, lipid in the aqueous environment in the intestine. Bile is the
one responsible for the efficient digestion of lipids. Bile is secreted in the
gallbladder down to the small intestine. It then breaks dietary fats into
smaller particles called emulsification in the small intestine. The bile’s
function is in the completeness of the digestion and absorption of fat. </span></span>
Answer:
A living being or organism is a complex set of organizational material, in which molecular communication systems intervene that relate it internally and with the environment in an exchange of matter and energy in an orderly manner, having the ability to perform the basic functions of life that are nutrition, relationship and reproduction, in such a way that living beings work by themselves without losing their structural level until their death.
Explanation:
The matter that composes living beings is formed in 95% by four elements (bioelements) that are carbon, hydrogen, oxygen and nitrogen, from which biomolecules are formed: 3 4
Organic biomolecules or immediate principles: carbohydrates, lipids, proteins and nucleic acids.
Inorganic biomolecules: water, mineral salts and gases.
These molecules are constantly repeated in all living beings, so the origin of life comes from a common ancestor, as it would be very unlikely that two living beings with the same organic molecules have independently appeared.5 6 Stromatolites have been found 3700 million years old, 7 so that life could have arisen on Earth 4100-3800 million years ago.1 8 9
All living things are made up of cells. Inside these are carried out the sequences of chemical reactions, catalyzed by enzymes, necessary for life.
The science that studies living things is biology.
