20 POINTS I NEED HELP ILL GUVE U BRAINLIEST BUT MAKE JT YOUR OWN ANSWER. a. How do chemicals contribute both to environmental problems and to
environmental solutions?

Environmental issues such as climate change, water pollution and renewable energy make the news headlines and have become increasingly important in every day life.

Explanation:

(Do not need to add) Many people perceive chemistry and the chemical industry as harmful to the environment. Research in biological sciences and chemistry has revealed that industrial processes in chemistry  could play a role in developing solutions to environmental problems such as climate change.

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

the correct answer is:

a. formation of precipitation