Bio182 NAU Exam 1 Chapter 45 Questions And Answers Graded A+

There are two major classes of aquatic biomes that are divided based on their salt content. What are they? - Freshwater (Less than 1%) Marine (2-3%) At what levels of life are focused on while studying ecology? - Organisms, Population, Community, Ecosystems, and Biosphere Be able to explain how and why a mountain can actually show several major biomes from the bottom to the top of the mountain - Desert, Desert Grassland, Oak Woodland, Pine Woodland, Spruce Fir Forest Chaparral - Tree less, lots of grass, dry summers, moist Coniferous forest - Dense, cone bearing trees Desert - Very dry with unpredictable rainfall Polar/Arctic - Found in the Northern/Southern Hemispheres Savannas - Grasses with scattered trees, warm, rain, fires Temperate Broadleaf (Deciduous) forest - Found in the eastern part of the US, dense trees, lots of moisture Temperate Grassland - Tree less, lots of grasses, frequents droughts, fires Tropical Rain Forest - Found in equatorial areas, warm, high precipitationTundra - Permafrost, cold, high winds What % of earth does fresh water cover? - Less then .01% What are biomes characterized by in both aquatic (water) and terrestrial (land) areas? - Aquatic Biomes Characterized by their salinity and other physical factors Terrestrial Biomes Characterized by their vegetation, precipitation, temperature What happens when you go up a mountain? - Temperature decreases, pressure decreases What is the definition of Ecology? - Study of interactions among organisms and their environment What is a biome? - A biome is a major aquatic or terrestrial life zone