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
Answer:
An urban community is the largest type of community. So 3 is false.
Pittsburgh is a city in western Pennsylvania. So True.
Explanation:
Ring of Fire. The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes.
Ponds can develop self containing ecosystems.