BSC 101 Lecture Notes - Lecture 12: Keystone Species, Water Cycle
Document Summary
Section 5. 4: energy and ecosystems: trophic levels, food chains, food web, energy pyramid. Section 5. 5: interactions in social groups increase fitness: communication, dominance hierarchy. These notes represent a detailed interpretation of the professor"s lecture. Gradebuddy is best used as a supplement to your own notes, not as a substitute. Reservoirs: locations where substances (water) resides that is only temporary: biological reservoirs: living things, such as plants and animals, where water resides in, nonliving reservoirs: atmosphere, oceans, soil, or rocks. 90% of freshwater is found in antarctica, in the ice. The sun heats the water and evaporates it, turning it into vapor. (humidity) When the clouds become too heavy, they fall as rain. (precipitation) Some rain flows over land as runoff, into lakes and oceans. The sun heats this water and the whole cycle continues again. Watersheds: geographic regions where all precipitation drains into specific rivers or lakes. Freshwater: naturally occurring water that doesn"t contain salt and is safe to drink.
