Water that freezes into ice, thaws back into water, and then freezes again in the cracks of rocks causes which type of weathering

A. mechanical weathering

B. neither chemical nor mechanical weathering

C. hydraulic weathering

D. chemical weathering

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Which of these is an intensive property of a substance