| A | B |
| aquatic | growing or living in the water |
| acid | a substance that is lower than 7 on the pH scale |
| base | opposite of acid. A substance that is higher than 7 on the pH scale |
| eutrophication | increase in nutrients in an aquatic system over time |
| lethal | deadly for an organism |
| organism | any living creature |
| toxic | poison |
| aesthetically | beautiful or pleasing to the eye |
| attributes | a characteristic or quality belonging to a person or thing |
| colloidal | a substance made up of tiny undissolvable particles that will not settle out (milk) |
| concentration | measurement of the amount of solute (particles) mixed into the solvent (liquid). |
| ecology | the study of how organisms interact with each other and their environment |
| essential | absolutely necessary |
| inorganic | matter that is not living and did not come from such-- air, water, minerals, metals |
| organic | any aspect of living matter, evolution, structure, or chemistry |
| nutrient | any material needed by an organism for growth, maintenence, repair, or energy |