By rename do you mean turn into an improper fraction?
if so, it is because without turning it into an improper fraction, you cannot subtract 3/4 from 1/4 because you would get a negative answer and that would be incorrect
How it will it affect things, people, communities, animals, the environment.
The atmosphere is like a blanket for our planet, within this atmosphere, there's a layer called "The ozone layer" which protects our planet from most of the sun's harmful rays. And yes, the ozone layer has holes, because of the pollution.
An orthophoto is an aerial photograph planimetrically corrected. Orthophotographs have the positive attributes of a photograph such as detail and timely coverage, and the positive attributes of a map including uniform scale and true geometry.
The push factors are the fact that there aren’t many jobs in the current city.
the pull factors are the fact that there are more job opportunities in the new city. another pull factor is the good weather.
hope this helped:)
brainliest?