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Ecology Smith

Rinehart Notecards

QuestionAnswer
Ecology the scientific study of interactions among organisms and between their environment and surroundings
Biosphere contains the combined portions of the planet in which all of life exists, including lamd, water, and air(atmosphere)
Species a group of organisms so similar to one another that they can breed and produce fertile offspring
Populations groups of individuals that belong to the same species and live in the same area
Communities assemblages of different populations that live together in a defined area
Ecosystem a collection of all the organisms that live in a particular place, together with their non-living, or physical, environment
Biomes a group of ecosystems that have the same climate and similar dominant communities
SECTION 2 SECTION 2
Autotrophs organisms that can capture energy from sunlight to use as food
Producers organisms that make their own food
Photosynthesis the process in which autotrophs harness solar energy
Chemosynthesis when organisms use chemical energy to produce carbohydrates
Heterotrophs organisms that rely on other organisms for their energy and food supply
Consumers another word for heterotrophs
Herbivores obtain energy by only eating plants
Carnivores obtain energy by only eating other animals
Omnivores eat both plants and animals
Detritivores feed on plant and animal remains and other dead matter
Decomposers break down organic matter
Food Chain a series of steps in which organisms transfer energy by eating and being eaten
Food Web when the feeding relationships among the various organisms in an ecosystem form a network of complex interactions
Trophic Level each step in a food chain or food web
Ecological Pyramid a diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or food web
Biomass the total amount of living tissue within a given trophic level
Created by: chaka987
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