D.O. AND PH FOR CHIMACUM MIDDLE SCHOOL.

WHAT IS THE DEFINITION OF D.O.?
1. inzolved oxygen.
2. Decreace in oxygen.
3. Dissloved oxygen.
4. Dissarayed oxygen.
What is the definition of pH?
1. positive hydrogen.
2. A and D.
3. positive heat.
4. negative hydroxide ions.
what is the defanition for synergy?
1. 2 or more chemacals that combine.
2. rich soil.
3. chemachals that get in the water.
4. A and C.
Is a pH level of 3.4 acidlike or alkaline like?
1. yes.
2. no.
3. true.
4. A & C.
phyotoplankton make how much of our earth's air supply?
1. One- forth.
2. Two- forths.
3. Three- forths.
4. Enough to allow one human to survive an hour.