Answer:
Variations are caused by mutation. random mating between organisms.
Explanation:
Answer:
According to the U.S. Energy Information Administration (EIA), in 2015 Wyoming, West Virginia, Kentucky, Illinois, and Pennsylvania produced about 639 million short tons (580 million metric tons) representing 71% of total U.S. coal production in the United States.
Explanation:
Lactose Intolerant
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Answer:
crab shells, fish scales, and fish bones might be found. And pieces of trash like chip paper, rubber bands, and tin foil.
Explanation:
Pellet can be described as a compressed mass of a substance, which is usually have round shape and small size.
it is understood that the pellet is formed when the birds catches the prey and swallow it in large chunks . Then, they digest the parts of the prey that are digestible, which goes down their esophagus, then through their proventriculus , and finally into the gizzard. The parts that are not digestible form a pellet.
It should be noted that the pellet is stored for several hours, after which it is regurgitated.
The earth rotates around its axis as it revolves around the sun. it takes the earth one year to complete a revolution.