| Term | Definition |
|---|---|
| Taiga | A Northern forest biome comvered mostly by coniferous trees |
| Muscle | Something in humans that weakens in a weightless environment |
| Mercury | The closest planet to our sun |
| Venus | The 2nd planet from our Sun |
| Savanna | Another name for Tropical grassland biome |
| Deciduous | A type of tree that drops its leaves in the fall season |
| Lichen | A pioneer species on a volcanic island |
| Solar System | A star with orbiting planets |
| Mars | A planet with a thin atmosphere, some underground frozen water and lots of iron oxide (rust) |
| Equilibrium | When ______ is reached in an area succession stops occuring |
| Orbital Velocity | The speed a satellite must travel to stay at an orbital level around a planet |
| Biome | Large areas that are defined by climate and the lifeforms that live there |
| Ozone | The invisible gaseous layer that protects life on earth from U.V.radiation |
| Primary Succession | The type of succession that occurs after a volcano |
| Equator | The latitude line that divides the Northern and Southern hemisphere |
| Tropical | The warmest climate zone on earth |
| Grass | A pioneer species of secondary succession |
| Climax Community | The end result of succession |
| Tropical Rainforest | An area that receives over 200 cm of Precipitation a year and never freezes |
| Desert | A biome that gets less than 25 cm of precipitation each year but may also reach temperatures of over 50 degrees celcius |
| Coniferous | The type of trees that dominate the Taiga biome |
| Biodiversity | The variety of living species |
| Temperate | The climate zone with 4 seasons, some freezing in the winter and warm summers |
| Soil | Something that Primary succession doesn't begin with |
| Tundra | A biome with permafrost and less than 25 cm of rain per year |
| Precipitation | Water in any from that falls from the sky |
