a powerplant is operated by steam

the smoke is coming from many factories is polluting the air

we learned that water is a renewable energy from the book

because graphs show a dramatic change many labs use graphs

canada beavers has disadvantage that we can't learn english on weekend

so many radioactive  are harmful for health

at school beverage is replaced by water

brandon teacher requirs a set of 3prints

i hope we have an intelligent robot at my house