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
Answer: Part A: D They separated into different groups long ago.
Part B: The answer is: "it also seems like they didn't mix much with outside groups until the arrival of Europeans in the seventh century"
Explanation: I took the test hope this helps!
Answer:
it's the last one because I looked it up
Indefinite means not certain
Answer:
Maria should look in the engineering terminology book for the meaning of 'columns' or look in the dictionary for its technical meaning.
Explanation:
In the context, Maria who is referring an online text source, is reading about some engineering process. She comes across the word 'columns' which she believes she knew its meaning but she verify by looking the meaning of the word 'column' in an engineering terminology book.
She can also refer to a dictionary and look for its technical meaning. As in typography, the word 'column' means a vertical division of any page or the text. But in engineering, a 'column' may refer to a vertical pillar.
