Ecology

Notes

**Measure of the amount of mass in a given volume.** **Describe how mass, volume, and density are related:** • Calculate density, mass, and volume given two of the three variables (use the formula). **Define physical property:** A characteristic of a substance that can be observed and measured without changing it into an entirely different substance. **List common physical properties of matter:** - Color - Length - Density - Melting point - Boiling point - Luster (shine) - Electrical conductivity - Thermal conductivity **Define chemical properties:** A substance's ability to change into a new substance with different properties. --- **Science First Term - Review** **1. Define ecology:** It is the study of organisms that interact with each other. **2. Distinguish between biotic and abiotic factors:** **Abiotic factors:** Non-living things that are part of an ecosystem and shape its environment. These include: - Methane - Sunlight - Ozone - Nitrous oxide - Chlorofluorocarbons - Water vapor **Greenhouse effect issue:** It occurs when greenhouse gases trap heat from the sun, keeping Earth warm enough to support life. Too m...