Answer:
Explanation:
archaea:they live in water area and usually eat some plants
bacteria:the germs that are in the air
eukarya:it is an animal well better said any animal because it has a cell membrane and nucleus to protect the cell
<span>People in some countries eat little or no meat. They are getting much of their protein from vegetarian protein sources.
</span><span>Fish is one of the major sources of animal protein around the world.
</span><span>Fish is the main source of animal protein in many developing countries, providing over 50 percent of the animal protein consumed in some areas, according to the Food and Agriculture Organization.
</span>In some developing nations, the percentage <span>of animal protein from the fish in the diet can be high as the percentage of animal protein from red meat (beef and pork) in America.</span>
A larger, biologically active protein complex is created when two or more protein subunits come together to form a quaternary structure.
A protein's quaternary structure is formed when several protein chains or subunits come together in a compact configuration. There are separate primary, secondary, and tertiary structures for each of the subunits. Hydrogen bonds and van der Waals forces between nonpolar side chains hold the subunits together.
For a quaternary structure to function as a whole, the subunits must be arranged in a particular way. Any change to the subunits' structure or how they are linked results in noticeable adjustments in biological activity.
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Photosynthetic bacteria changed the Earth's atmosphere
