Question

first to answer correctly will be marked as the brainliest​

Answer 1

Answer:

Here you can take precaution to control the air and water pollution o of chemical industry is never dump waste into the rivets and never let to air harmful to mix up with air. Then we have purified the air before it get out the atmosphere and the industry must be locate out of the city.

Answer 2

Answer:

1. a 10Hz

2. c 10m

3. d 400m/s