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Chemistry 2013
Study cards fro my chemistry test!
Question | Answer |
---|---|
Explain what the Ozone Layer is | A Layer of clear odor less gas (ozone) that sheilds earth from harmful UV rays. |
Name one microbiological indicator | Take a small sample from the water source. |
what do scientists use to help determin water quality? | Organisms. |
What are invertabrates? | Animals without a backbone. |
Name six chemical factors that affect organisms. | Disolved oxygen, acidity, heavy metals, Pesticides, plant nutrients such as nitrogen and phosphourus, salts such as sodium chloride and magniesium sulfate. |
defin spring acicd shock. | whne the PH in a river, lake , or pond dramitically lowers in a short period of time. |
what is a pesticide? | A chemical used to kill pests that eat or ruin plants, humans, or structures. |