To get rid of bedbugs one can Select one:
a. iron the sheets
b. wash the bed sheets one a week with soap and chlorox
c. all of the above
o
d. put bed sheets in an autoclave

1. desertification

2. captive breeding

3. black rhinoceros

4. renewable resources

explanation:

mark brainliest!

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.