| A | B |
|---|
| biosphere | this contains all life on Earth |
| hydrosphere | contains the water in the ocean, glaciers, and even the water in the atmosphere. |
| lithosphere | is made up of ALL the crust and ONLY the upper mant;le of the Earth. |
| atmosphere | layers included in the biosphere are: A. troposphere-entire layer(birds fly) B.stratosphere-lower layer(temperature remains constant) |
| ecosystem | ecosystem means communities of living things in one enviornment. |
| lake | (aquatic ecosystem)physical conditions of lake, fish, frogs, and aquatic insects. |
| hardwood forests | (terrestrial ecosystem) trees, vegitation, and animals . |
| boundary | the place where two ecosystems come together is known as a boundary |
