People who have muscular dystrophy have something called a "mutation". How does that mutation arise

The correct answer is - It can occur when the DNA is copied over there can be a problem that is not caught during cell division causing that makes the new DNA mutated form of the original version and the mutation can be ok or harmful.

Explanation:

DMD or muscular dystrophy is a recessive x liked genetic disorder that takes place due to mutation or the error in the genes during cell division and desired protein does not form called dystrophin.

It takes place due to an error in DNA replication and is not corrected or identified by the checkpoints of the cell division and expressed from the mutated form of dystrophin which is shorter than the original form.

they are known to reach a speed of 21 miles per hour

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."