Answer:
50
Explanation:
40-10 = 30…...…............
Answer: he expected to find no darkening of the film all because it hadn't been exposed to sunlight yet.
Number one would be Decades
Answer:
Yes
Explanation:
Based on the graph, nuclear energy is one of the least contributors of CO2 emissions.
You would support this source of energy .
The answer is a. Chemical change.