Answer:air pollution
Explanation:
Air Pollution is the presence in to the air of a substance which has harmful or poisonous effects
Point mutations can show three different types of effects:
- Base substitutions can be silent mutations in which the changed codons correspond to the same amino acid.
- Base substitutions can be missense mutations where the changed codon corresponds to a different amino acid.
- Base substitutions can be nonsense mutations in which the altered codon corresponds to the stop signal.
<h3>What are point mutations?</h3>
Point mutations are changes to the N base of DNA or RNA. Point mutations are common, but their effects can be mitigated by gene recovery mechanisms.
The cause of this point mutation is due to 4 factors:
- Errors during DNA replication by mutagens.
- Breaking of oxygen-phosphate bonds.
- Substitution of base pairs.
- Changes in the number of bases.
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An enzyme known as amylase is found ins the saliva of humans. This enzyme helps to begin the process of digesting starch molecules in the foods we eat. The best description of how enzymes like amylase help in the process of digestion would be that Amylase is a catalyst that speeds up the chemical process of breaking down food molecules.
Answer:
E. all of above i think not 100% sure,
Explanation: