Transcript Environmental Science Chapter One – Everything is Connected

Environmental Science
Chapter One – Everything is Connected
Define the following words:
Ecology
Biotic
Abiotic
Population
Community
Ecosystem
Biosphere
Chapter One – Section Two
Define the following words:
Producers
Consumers
Herbivore
Carnivore
Omnivore
Scavenger
Food Chain
Food Web
Energy Pyramid
Habitat
Niche
Chapter One – Section Three
Define the following words:
Limiting Factors
Carrying Capacity
Competition
Prey
Predator
Symbiosis
Mutualism
Commensalism
Partsitism
Coevolution
Environmental Science
Chapter One – Everything is Connected
Define the following words:
Ecology – Ecology is the study of the interactions between organisms
and their environments.
Biotic – The biotic part of the environment is all of the organisms that
live together and interact with one another.
Abiotic - The abiotic part of the environment includes all of the
physical factors – water, soil, light and temperature – that affect
organisms living in a particular area.
Population – A population is a group of individuals of the same
species that live together in the same area at the same time.
Community – A community consists of all of the populations of
different species that live and interact in an area.
Ecosystem – An ecosystem is made up of a community of organisms
and its abiotic environemnt.
Biosphere – The biosphere is part of Earth where life exists.
Chapter One – Section Two
Living Things Need Energy
Producers – An organism that uses sunlight directly to make food is called a
producer.
Consumers – Organisms that eat producers or other organisms for energy are
called producers.
Herbivore – A herbivore is a consumer that eats plants.
Carnivore – A carnivore is a consumer that eats animals.
Omnivore – An omnivore eats a variety of organisms, both plants and animals.
Scavenger – Scavengers are animals that feed on the bodies of dead animals.
Food Chain - A food chain represents how the energy in food molecules flows
from one organism to the next.
Food Web – A food web shows the many energy pathways possible in an
ecosystem.
Energy Pyramid – A diagram shaped like a triangle that shows the loss of energy
at each level of the food chain.
Habitat – The environment where an organism lives is its habitat.
Niche – An organisms way of life and its relationships with its abiotic and biotic
environments.
Chapter One – Section Three
Types of Interactions
Limiting Factors – When a resource becomes scarce, it limits the growth of a
population.
Carrying Capacity – The largest population that a given environment can
support over a long period of time is known as the carrying capacity.
Competition – When two or more populations try to use the same limited
resource, it is called competition.
Prey – The organism that is eaten by others is known as prey.
Predator – The organism that eats prey is known as a predator.
Symbiosis – A close, long-term association between two or more species.
Mutualism – A symbiotic relationship in which both organisms benefit.
Commensalism – A symbiotic relationship in which one organism benefits while
the other is unaffected.
Parasitism – A symbiotic association in which one organism benefits while the
other is harmed
Coevolution – The long term changes that take place in two species because of
their close interactions with one another