You are looking at a map for your neighborhood. You notice a key that tells you that each centimeter on the map equals 5 kilometers. This key is
called a
degree
scale
O compass
O symbol

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.

The water cycle increase the water content in the earth atmosphere

They make up examples of physical properties