| A | B |
|---|
| ecosystem | community of living things |
| respiration | energy stored in sugar is released for use |
| photosynthesis | CO2+H2O+energy=sugar+02 |
| producers | make their own food |
| consumers | get food from other organisms |
| decomposers | organisms that break down waste materials and dead organisms |
| decomposers' usefulness | return carbon, oxygen, nitrogen, and other chemicals to the ecosystem |
| deforestation | the loss of trees and other plant life |
| classification | the organization of things into groups according to ways in which they are alike |
| Aristotle | classified animals into land, water, or air |
| Linnaeus | classified organisms by comparing similarities of form and structure |
| kingdom | the most general level of the classification system |
| species | the most specific level of classification |
| modern classification | determined by how closely organisms are related |
| relationships are determined by | fossils, biochemicals, reproductive habits, and DNA structure |
| scientific name | genus + a descriptive term |
| Kingdom Plantae | multicellular, most make their own food, cells have nuclei, organelles, and walls |
| Kingdom Fungi | single or multi-cellular, absorb food from surroundings |
| Kingdom Monera | single celled, includes bacteria |
| Kingdom Animalia | multicellular, most show organ systems, ingest food |
| Kingdom Protista | complex cells, no organs, includes algae and protozoans |
| omnivores | eat both meat and plants |
| carnivores | eat only meat |
| herbivores | eat only plants |
| regeneration | the capacity to regrow lost limbs |
| cancer | uncontrolled cell division |
| gall | a sore on a plant caused by insect eggs |
| stimulus | anything that causes living things to react |
| response | the reaction to a stimulus |
| proteins | help build and repair cells |
| cancer | uncontrolled cell division |
| carbohydrates | sugars and starches |
| kudzu | plant from Japan that has caused problems in the South |
| rabbits | imported to Australia |
| sparrows | brought to U.S. to kill canker worms |
