Concealed is when you hide something and revealed is when you reveal or show something
Answer:
Here are ideas to keep in mind.
Keep Your Neighborhood Clean. If you see trash on the ground, toss it in a trash can.
Recycle Cans, Bottles, and Paper. Save them at home and at school, and help your family recycle them.
Help Keep the Air Clean. Ride your bike or walk to school. ...
Save Paper. ...
Help Save Water.
I hope this helps!
Decisive actions the rest are correct which leaves Decisive actions