Answer:
Respiratory
Explanation:
It provides oxygen that is necessary for the heart to pump blood to the body. It also provides oxygen for the brain to work
Toxic chemicals are mostly found in waste sites where they dump old chemicals and with that, that could cause health problems because they could either dump it into the oceans where the life is or they will burn it causing pollution.
Hope this helped :)<span />
Your answer would be A: 24
because 20% of 30 is 6 and because he wants to decrease it by 20% (or 6) it would make your answer 24.
20% into a decimal is .20
.20 divided by 30=6
7 isnt an option? i guess go for 6 hope this helped :)
