| A | B |
|---|
| biomagnification | toxins increase in concentration up the food chain |
| bioaccumulation | toxins concentrated in organisms' tissue over time |
| biodegradable substances | breaks down by bacteria over time |
| liming | add base, like calcium carbonate, to neutralize |
| organic nutrients | proteins, lipids and carbonates |
| inorganic nutrients | trace elements, macro nutrients and carbon dioxide |
| pH | scale of measuring how acidic or basic a substance is |
| acid | sour, low pH, corrosive, conducts |
| base | bitter, high pH, corrosive |
| abiotic | non living parts of the environment |
| phosphates | decreases dissolved oxygen in water |
| dissolved oxygen | needed for health of aquatic organisms; measured in ppm |
| LD50 | how much of chemical to kill 50% of population |
| ppm | measuring concentration of a chemical |
| energy conservation | reducing energy use through reduction and alternate forms |
| nitrogen, phosphorus and potassium | essential nutrients needed by plants |
| pesticide use | will decline over time as pests become resistant |
| neutral substance | pH of 7; pure water |
| concentration | decreases the farther you go from the source |
| North and South poles | areas where air and water pollution can accumulate |
