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U7- Org. & Env. 2022

Unit 7 - Organisms and Their Environment

TermDefinition
biotic factor the living (or used to be living) parts of an environment or habitat - animals & plants
abiotic factor the nonliving parts of an environment or habitat - water & rocks
biome a large ecological region where climate and soil determine the plants and animals that live there
microhabitat a very small habitat - a clump of grass, a rain puddle, under a log
habitat the place where an organism lives
biodiversity the variety of life - the number and variety of living organisms in an ecosystem or biome - more variety means greater sustainability
ecosystem a smaller area within a biome, where the living and nonliving things interact with each other
sustainability (sustain, sustainable) the ability of an ecosystem to maintain itself during stressful times - disease, tornadoes, floods, fire, pollution
limiting factor an environmental factor that keeps or limits a population at a certain size - available food
population a group of the same species that live in the same area, and compete for the same resources - deer, squirrels, hawks
adaptation an inherited trait that improves survival and reproduction success - thick fur
genetic diversity the differences in genetic traits among a species - jaw size in large predatory cats
predator an animal that naturally preys on or hunts other animals
prey an animal that is hunted by another animal
niche what the organism does in its habitat -a specific role - its job
ecology the study of how living and nonliving things in an environment interact with each other
competition the struggle between living things for limited resouces
interaction when two or more organism react to each other
threatened species close to being in danger of dying out
equilibrium a state of balance in an ecosystem
interdependence the survival of a species is dependent on other living organisms and the nonliving parts of the environment
consumers an organim that gets energy from eating other organisms
producer an organism that uses sunlight to make its own food for energy
diverse different
basic needs The things an organism needs to survive and thrive in their habitat - Air, water, shelter, and food for animals, AND for plants - air, water, light, space, and nutrients.
environment the surroundings or conditions in which an organism lives
climate the weather conditions in an area over a long period of time
species a group of animals, plants or other living things that all share common characteristics, that can exchange DNA
genetic variation the genetic differences between individuals - like eye or hair color
organism a living thing that has an organized structure
BIO the prefix that means LIVING or LIFE
MICRO the prefix that means extremely small, and not visible with the eye
Created by: Blackcat8765
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