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Ecology and Cycles

Review for ecology and cycles quiz

QuestionAnswer
Autotrophs (producers) plants, they use carbon dioxide and sunlight to produce energy through photosynthesis
Competition 2 organisms try to obtain the same resource in the same area
DNA Deoxyribonucleic acid, double stranded, stays in nucleus, Adenine binds with thiamin and guanine binds with Cytosine A to T and G to C, determines the order of the amino acid sequence of a protein.
deforestation cutting down forest, results in carbon dioxide being released into the atmosphere resulting in global warming or global climate change
acid rain rain with a low pH formed when sulfur from factories is released into the atmosphere. Destroys plants and animals living in lakes, results from power plants releasing acidic chemicals into the air.
DNA codes for proteins by arranging certain nitrogen bases in a particular order
global warming caused by increasing carbon dioxide levels in the atmosphere usually from burring fossil fuels
nucleic acids subunits of DNA that code for proteins
Photosynthesis plants combining water and carbon dioxide in the chloroplast with sunlight to make glucose and oxygen.
cellular respiration animals and plants combine oxygen and glucose in the mitochondria to form ATP, carbon dioxide and water
biomass the total amount of plants and animals at each level of the food chain. makes a pyramid shape. Most at bottom in plants, least at top in tertiary consumers
nitrogen fixation bacteria take compound and turn them into a form of nitrogen which is usable by plants and animal
mitochondria cell organelle responsible for cellular respiration (making ATP)
decomposer food web organisms that break down dead and decaying material and return their nutrients back to the soil.
energy pyramid a pyramid shaped diagram that show how energy level decrease as organism move through a food web. Only 10 percent of the energy is transferred to each level.
heterotrophs (consumers) organism in a ecosystem that must eat to obtain energy. everything but plants
carnivore eat only meat
omnivore eat plants and animals
herbivore eats only plants
Mutualism both organisms living together benefic. ex lichens
migration animals moving a long ways away from an area for a season to find food or reproduce
carrying capacity maximum number of animals that an area can support. Make a s shaped graph
exponetial growth when a population grows very rapidly exceeding it carrying capacity and will eventually run out of resources and have massive deaths.
food web graphic representation of how energy is moved through an ecosystem from producers to consumers converting radiant energy into chemical energy.
bioaccumulation when small amounts of toxins are eaten by animals lower on the food chain and their affects are magnified as they move up the food chain. Example mercury in fish.
Carbon cycle How carbon is naturally cycled through the atmospher. burning fossil fuels and deforestation increases carbon dioxide in the atmosphere leading to global warming. Plants remove carbon by photosynthesis.
Created by: TeresaGentry