Answer:
Chronic stress accelerates premature aging by shortening DNA telomeres. Each chromosome is like a DNA library with two protective caps on the end known as telomeres. As telomeres become shorter their structural integrity weakens, which causes cells to age faster and die younger.
Explanation
An intense feeling of fear
D. progenitor
hint: "pro" means before
Answer:
Frost endured a number of hardships during his lifetime
Explanation:
