Which one of the following is the same at all place? a) velocity
b)energy
c)weight
d)mass

Awatershed is a piece of land that drains water into a particular stream, lake, or river. which of the following factors often negatively impacts the water quality in a watershed? a.) wetlands b.) pollution c.) irrigation d.)rainfall

Need answer select the correct answer. what was one of the first countries in the region to be claimed by european colonizers? a. myanmar (burma) b. thailand c. laos d. the philippines

Explain why components that are naturally found in air can be considered air pollutants.