10.5.odt - Directions Please read the following material...

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Directions: Please read the following material and take notes. There will be an assessment to evaluate your understanding of the material on the last slide. An ecosystem includes both biotic and abiotic factors All ecosystems are made up of living and nonliving components. These parts are referred to as biotic and abiotic factors. 1. Biotic (by-AHT-ihk) factors are living things, such as plants, animals, fungi, and bacteria. Each organism plays a particular role in the ecosystem. For example, earthworms play a key role in enriching the soil. 2. Abiotic (ay-by-AHT-ihk) factors are nonliving things such as moisture, temperature, wind, sunlight, and soil. The balance of these factors determines which living things can survive in a particular environment. In the Caribbean Sea, scientists found that coral reefs located near saltwater marshes have more fish than do reefs farther out at sea. As shown in Figure 10.5 , the key biotic factor is the mangrove trees that live in the marshes. The trees provide food and shelter for newly hatched fish, protecting them
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