The light-year is used to describe distances between Earth and stars other than the Sun because the astronomical unit is Select one:

a. too small.

b. too large.

c. not accurate.

d. not well defined.
Pls help!!

B) Too large because the distance between the stars and  the earth is too much to measure in any other unit

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.