| A | B |
|---|
| classification | grouping of things according to similar characteristics |
| binomial nomenclature | naming system with 2 names, genus then species |
| heterotroph | an organism (either consumer or decomposer) that cannot make its own food so it obtains energy from other organisms |
| autotroph/producer | an organism that obtains energy by making its own food |
| archaea | one-celled organisms without a nucleus, like Earth's first life forms, many live in extreme environments |
| cell | the smallest unit of life |
| protists | most are one-celled, all have a nucleus, some are autotrophs, some are heterotrophs |
| fungi | most have many cells; all have nucleus, all are heterotrophs, don't move on own |
| animals | many cells, all have nucleus, are heterotrophs, can move on own |
| plants | many cells, all have nucleus, are autotrophs, don't move on own |
| bacteria | one-celled organisms without a nucleus, most live everywhere except extreme environments |
| evolution | process in which new kinds of organisms develop from previously existing kinds of organisms over a long time |
| consumer | heterotroph that eats other organisms to get energy |
| decomposer | heterotroph that gets energy from breaking down remains of dead organisms |
| herbivore | consumer that eats only plants |
| carnivore | consumer that eats only animals |
| omnivore | consumer that eats both plants and animals |
| scavenger | consumer that eats dead animals |
| food web | flow of energy in an ecosystem between producers, consumers and decomposers |
| ecosystem | living and non-living things that interact with each other in a particular area |
