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Summit to the Sea Algae - simple plants without leaves, stems, or roots. Often single-celled organisms Aquatic habitat - a habitat with water that includes areas permanently covered by water and surrounding areas that are occasionally covered by water Aquifer - areas underground which store water, characterized by porous rock and soil. Carnivore - an animal that eats only other animals Carnivorous - eating only animals Climate - the long-term weather conditions of an area Decomposer - an organism that eats dead plant and animal matter Detritus - small pieces of decayed plant and animal matter Discharge - the amount of water passing a point on the river in a given amount of time Ebb tide - a tide that is falling Erosion - the loss of soil and gravel from the surface of land. It occurs when sediments are exposed and swept away by wind or water Estuary - a place where freshwater from a river mixes with saltwater from the ocean Flood tide - a tide that is rising Food web - a diagram that shows all the main organisms in an ecosystem and how they are connected on the basis of feeding relationships Freshwater - water that contains few minerals. This type of water is in streams, rivers, lakes, and groundwater, and is the water we drink. Geology - the study of the structure of the earth and the processes that have formed it over time Groundwater - water that lies beneath the earth's surface. Most groundwater is stored in aquifers. Habitat - an area where an organism lives Herbicides - chemicals that kill plants Herbivore - an animal that eats only plant matter Herbivorous - eating only plant matter Omnivore - an organism that eats both plant and animal matter Omnivorous - eating both plant and animal matter Pesticides - chemicals that kill insects Photosynthesis - the process by which plants use energy from the sun to make their own energy. Within their cells, plants use sunlight energy to convert water (H2O) and carbon dioxide (CO2) to sugar (C6H12O6) and oxygen (O2). Phytoplankton - tiny plants that float and drift in the water, including many types of algae Pollutant - a material which causes damage to the environment Pollution - the introduction of materials, such as chemicals and waste, which cause damage to an environment Porous - a material that is full of small air holes Producer - an organism that uses sunlight energy and nutrients from the air and soil to grow and develop Salinity - amount of salt in water Saturated - containing as much water as possible Sediment - small bits of soil and gravel Sediment load - the amount of soil and gravel suspended in the water Storm water runoff - Surface water - water we see above ground, including streams, rivers, lakes, ponds and wetlands. Tides - the alternating rise and fall of sea levels Topography - land surface features such as hills, valleys, rivers, and lakes Tributaries - the streams and rivers that flow into a larger river Water flow speed - the speed that water flows down a river Water level - water depth Water table - the highest layer of soil underground that is saturated with water Watershed - an area of land drained by a river system Zooplankton - tiny animals that float and drift in the water Appendix II. Unit conversions 1 m = (3?) feet1 km = (0.62?) mile 1 liter = (0.5?) gallons Others
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