Cellular respiration is the process by which organisms use oxygen to break down food molecules to get *chemical energy *for cell functions.
Having two copies of the mutated genes cause sickle cell anemia, but having just one copy does not, and can actually protect against malaria - an example of how mutations are sometimes beneficial.
The majority of mutations have neither negative nor positive effects on the organism in which they occur. These mutations are called neutral mutations. Examples include silent point mutations. They are neutral because they do not change the amino acids in the proteins they encode.
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If they live in a river, they would most likely need fins (to swim) and gills (to breathe under water)
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Answer:
the size of something from one end to the other; how long something is
- Running race track
- tree