Center for disease control, national institute of health, occupational safety and health administrations.
Answer:
Green house effects
Explanation:
This is when gases are trapped in the earth's atmosphere and make the earth warmer
The product of 5 and n subtracted from 100
Answer:
Uhhh that sentence contradicts itself....
Explanation:
How can they see you without seeing you?
Okay, warning: (COULD BE WRONG) Just to help you out I think 3, 5, and 6, are correct. (COULD BE WRONG, YOU MIGHT GET A LITTLE CREDIT)