The arrival of an unwanted thing or person
Something good happened. The best thing to happen to that individual all day
To try and solve a problem or assist in some way
These are idioms
The correct answer to this question is:
"Relative abundance is a comparison between the isotopes and Percent abundance is a comparing the totals." Relative<span> species </span>abundances tend to conform to specific patterns. Percent abundance <span> can be calculated by finding the percentage of an isotope compared to another isotope of an element using its relative atomic mass.</span>
Answer:
I think it is B Hope it help You
Explanation:
Trey is involved, friendly and active in many things.