A. True/False: Circle the T beside each statement that is true. Circle the F beside each statement that is false. 1. Ecosystems can not be grouped into larger categories called biomes T 2. Biomes exist based on the average temperature and trees amounts T 3. Canada has four major terrestrial biome. T F 4. Tundra is located in Canada's Northern-most regions.T 5.Tundra located south of the Boreal forest in eastern Canada and the USA 6. There are four components of rainfall one of these four is Boreal forest 7. Carbon dioxide needed by bacteria to completely decompose dead organisms T 8. 97% of the water on earth is fresh water. T. F 9. Oceans control weather systems and provide a constant supply of water through evaporation T F 10. Terrestrial ecosystems are generally more productive than Aquatic ecosystems T F

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A. True/False: Circle the T beside each statement that is true. Circle the F beside each statement that is false. 1. Ecosystems can not be grouped into larger categories called biomes T 2. Biomes exist based on the average temperature and trees amounts T 3. Canada has four major terrestrial biome. T F 4. Tundra is located in Canada's Northern-most regions.T 5.Tundra located south of the Boreal forest in eastern Canada and the USA 6. There are four components of rainfall one of these four is Boreal forest 7. Carbon dioxide needed by bacteria to completely decompose dead organisms T 8. 97% of the water on earth is fresh water. T. F 9. Oceans control weather systems and provide a constant supply of water through evaporation T F 10. Terrestrial ecosystems are generally more productive than Aquatic ecosystems T F

Answer 1

1. **F**: Ecosystems *can* be grouped into larger categories called biomes.2. **F**: Biomes exist based on the average temperature and *precipitation* amounts, as well as the types of plants and animals adapted to those conditions. Tree amounts are a *result* of these factors, not the defining characteristic.3. **T**: Canada has four major terrestrial biomes (Tundra, Boreal Forest, Temperate Deciduous Forest, and Grassland). Some might argue for more subdivisions, but four is a commonly accepted number.4. **T**: Tundra is located in Canada's northernmost regions.5. **F**: Tundra is *not* located south of the Boreal forest. It is located *north* of the Boreal forest.6. **F**: Rainfall is not composed of biomes. Rainfall is precipitation. The Boreal forest is a biome, not a component of rainfall.7. **F**: While decomposers need oxygen for respiration, which breaks down organic matter and releases carbon dioxide, it's not carbon dioxide that's *needed* for the process. Oxygen is the key requirement.8. **F**: 97% of the water on Earth is *salt* water, found in oceans. Only about 3% is fresh water.9. **T**: Oceans play a significant role in controlling weather systems and provide a constant supply of water through evaporation.10. **F**: Aquatic ecosystems are generally *more* productive than terrestrial ecosystems, particularly in terms of primary productivity (the rate at which plants and algae convert sunlight into energy).

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