Lecithin is (organic chemistry) the principal phospholipid in animals; it is particularly abundant in egg yolks, and is extracted commercially from soy. It is also a major constituent of cell membranes, and is commonly used as a food additive (as an emulsifier). While cephalin is (biochemistry) a phospholipid found particularly in the cells of nervous tissue; it is also the primary phospholipid in bacteria.
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because they are plastic shopping bags are increasingly recyclable or biodegradable .Traditional plastic bags are usually made from polyethylene, which consists of long chains of ethylene monomers. Ethylene is derived from natural gas and petroleum. The polyethylene used in most plastic shopping bags is either low-density (resin identification code or, more often, high-density (resin identification code.Color concentrates and other additives are often used to add tint to the plastic. Plastic shopping bags are commonly manufactured by blown film extrusion.
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In the case of the sea turtles hatching witnessed by Ethan and his family, the behavior exhibited is called an <em><u>instinctive behavior.</u></em>
<em>The sea turtle knows that, the place which they are in (Inside the shells) are not where they are supposed to be in but rather should be inside a water body. Because of these, their instinct kicks in to free themselves from the shell and head towards the ocean.</em>
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A) cyclic and predictable
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The graph shows changes in the water levels (in feet, ft). The water cycle consists of water that evaporates from the surface (land and sea) and subsequently returns in form of rain and/or snow. In general, water levels may be unpredictable in short term but predictable in the long term. The graph shows that this process is cyclic because it is regularly patterned and also occurs in regular intervals (therefore being predictable).
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A community refers to all the populations in an area; an ecosystem includes both biotic and abiotic components.
Explanation:
because i said so, also i just did the usatestprep
