Domain = {3,1,5}.
If we look at the relation we find that the first numbers are 3,1,1 and 5.
And we know that the first number of a relation is its domain.
Answer: ozone concentration
Explanation: The Dobson Unit is the most common unit for measuring ozone concentration. Becuse ozone concentration is hard to measure they use The Dobson Unit.
The phase of the moon now is Waxing gibbous. Gibbous means that the other half is visible but is not full. This phase includes the night after first quarter and the night before the full moon.
I think it’s a ecosystem but I’m not completely sure!, give me a sec to search
