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Sci8 Energy

Energy in Ecosystems

a- a prefix meaning "not"
chemo- a prefix meaning "chemical"
bio a word part meaning "life"
abiotic not living, physical features of the environment, including air, water, sunlight, soil, temperature and climate
biotic features of the environment that are alive or were once alive
chemosynthesis The production of energy-rich nutrient molecules from chemicals.
water cycle A model showing how water moves from the surface of the Earth to the atmosphere and back to Earth again through precipitation, evaporation, and condensation.
condensation changing from a gas to a liquid
evaporation liquid water changing into water vapor
atmosphere the air surrounding the Earth; made up of gases, including 78% nitrogen, 21% oxygen and 0.03% carbon dioxide
soil mixture of mineral and rock particles, the remains of dead organisms, air and water that forms the topmost layer of the Earth's crust and supports plant growth
climate an area's average weather conditions over time, including temperature, rainfall or other precipitation
nitrogen fixation a process in which some types of bacteria in the soil change nitrogen gas into a form of nitrogen that plants can use
food web a model that shows interconnected food chains showing the complex feeding relationships among organisms in a community. Organisms may belong to multiple trophic levels
energy pyramid a model that shows the amount of energy available at each feeding level in an ecosystem. Each trophic level has less energy available to it than the level below.
nitrogen cycle a model that describes how nitrogen moves from the atmosphere to the soil, to living organisms and then back to the atmosphere
carbon cycle a model describing how carbon molecules move between the living and nonliving worlds
producer organisms that use the sun's energy to make their own food
consumer organisms that gain energy by eating producers and/or other consumers
decomposer organisms that consume dead plants and animals and release nutrients
herbivore primary consumers - plant eater
carnivore secondary consumers - eat primary consumers - meat eater
omnivore organisms that use both plants and animals for food
sun ultimate source of energy for all ecosystems
trophic level feeding level on a food web
arrows of a food chain represent direction of energy flow
basic needs of plants sunlight, water, minerals, air, space
Created by: satsherry