The teacher was particularly callous in her treatment of the children.
Children often emulate adults that they look up to.
In a world of finite resources, if some people have more, other people must have less.
The school's principal lauded the teacher for her ability to discipline her class.
Mountain lions are primarily nocturnal and do almost all of their hunting at night.
Be careful applying pesticides. Their fumes are often quite noxious to humans.
Max recanted every bad thing he said about Mary.