| A | B |
|---|
| climate | the weather of an area over a long period of time |
| ecosystem | a community of living things that interact and depend upon each other |
| evaporation | turning liquid into vapor (air) |
| extinct | no longer existing on Earth |
| glacier | a large mass of ice built up over a long time |
| harbor | a sheltered (protected) part of a body of water deep enough for anchoring ships |
| natural resource | something found in nature that people use |
| refuge | a place set apart to protect animals and plants |
| artifact | an object left behind by people long ago |
| council | a group of people who meet to talk about something important |
| nourish | to feed with healthy things |
| permanent | lasting a long time |
| influence | to affect people or make them change their minds |
| fertile | allowing lots of things to grow well |
| representative | someone elected to speak or act for others |
| fertilization | adding material to the soil so crops will grow better |
| boycott | stop buying something in order to make a point |
| fleet | group of warships |
| frontier | the edge of settled territory |
| independence | freedom from another country's control |
| patriot | a person who wanted the thirteen colonies to be free of the rule of England; someone who loves his or her country |
| protest | complain against an idea or action; speak out against something |
| revolution | when one government takes over another government |
| traitor | a person who turns against his friends and joins the enemy; someone who betrays trust |
| tax | make the people pay money to the government |
