| A | B |
|---|
| adaptation | change in species so it can survive in its habitat |
| classification | system of grouping organisms according to how they evolved |
| mollusk | invertebrate with a soft body and usually a hard shell |
| plankton | a microscopic organism living in the sea or in fresh water |
| energy pyramid | loss of energy from transfers between one level to the next |
| detritus | gravel, sand |
| food chain | sequence of who eats whom |
| food web | more complex description of who eats whom |
| invertebrate | animal without a backbone |
| photosynthesis | process of plants use of converting water, sunlight and carbon dioxide into food and oxygen |
| producer | organism that can make it's own food |
| xylem | woody tissue |
| phloem | tissue conducting sap in plants |
| sessile | immobile |
| crustacean | aquatic antropod with a hard shell |
