by sydney nickisher
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Primary consumer-an animal
that feeds on plants; a
consumer- a carnivore that
feeds only upon herbivores.
Tertiary consumer-An animal
that feeds only on secondary
consumers. J-curve- A graph
population growth. S-curve- A
graph representing exponential
population growth followed by a
gradual leveling off of the
population size. Population
growth rate- Is the change in a
population over time.
Organism- An organism is
any living system.
Population-A group of
organisms of the same
species inhabiting a given
area Community- A
group of interacting
Ecosystem-a system formed by
the interaction of a community
of organisms with their
environment. Biome-A large
community of plants and
animals that occupies a distinct
ecosystem comprising the entire
earth and the living organisms
that inhabit it.
Trophic levels-Any class of organisms that
occupy the same position in a food chain.
Rain forest-A tropical forest. Temperate
deciduos forest- Coniferous forest- A type
of forest characterized by cone-bearing,
needle-leaved trees. Desert-Any area in
which few forms of life can exist because
of lack of water, permanent frost, or
absence of soil.
Biodiversity- the existence of a
wide variety of plant and animal
species in their natural
environments, which is the aim of
conservationists concerned about
the indiscriminate destruction of
rainforests and other habitats.
Hot spots-Tropical areas with
large amounts of biodivercity.
Pioneer species- The first organisms to
start the chain of events leading to a livible
biosphere or ecosystem. Climax
community-A community that occurs late in
succession whose populations remain
stable until disrupted by disturbance.
Limiting factors-physical needs that
determine the survival of a species.
Food chain-a community of
organisms where each member is
eaten in turn by another member.
Food web-a community of organisms
where there are several interrelated
food chains. Producer-An orgasism
that produces its own food.
Carrying capacity- The number of
people that can be supported by
a given ecosystem. Population
growth- The change in a
population over time. Black
Industrail Revolution-A period
from the 18th to the 19th
century where major changes in
mining, and transportation. .
secondary succession is a
process started by an event
(forest fire, harvesting,
hurricane) that reduces an
already established ecosystem.
Logistic growth- Growth rates
regulated by internal and
external factors that establish
an equilibrium with
gradual and orderly
process of change in an
about by the progressive
replacement of one
community by another
until a stable climax is
succession- Is the
gradual growth of an
ecosystem over a longer
period of time.
Tundra-A vast treeless zone lying between the
ice cap and the timberline of North America and
vegetation consists largely of perennial grasses.
Freshwater biome-Wetlands, streams, lakes,
rivers, ponds, streams and endorheic basins.
Marine biome-A climatically and geographically
defined are. Abiotic factors-Living. Biotic factors-