What are some ways that humans modify their environments to suit the needs of their societies?

Humans commonly modify their environments by constructing roads, bridges, highways, and other structures for transportation. They can create parks, lakes, recreational areas, beaches, and other water areas. Humans construct houses, offices, skyscrapers, shopping centers, and other buildings to live and work in. Finally, they build hospitals, police stations, schools, fire stations, and other buildings for government services.

the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.