What are mutations?

a. changes in nucleotides of a dna molecule that affect the genetic message.
b. repairs of damage to dna molecules by specialized enzymes.
c. removal of damaged dna nucleotides by enzyme molecules.
d. reduction in the rate of replication of dna due to regulatory mechanisms.

A

Explanation:

Mutations changes in genes, repairs and removes genes.

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false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation: