Download What effect does speciation and extinction have on biological

SC.912.L.15.3
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The variability among
living organisms from all
sources including,
terrestrial, marine and
other aquatic ecosystems
and the ecological
complexes of which they
are a part; this includes
diversity within species,
between species, and of
ecosystems
Includes genetic
variation within species,
the variety of species in
an area, and the variety
of habitat types within a
landscape
 Speciation:
the origin of new species
If one species evolves into 2
or more surviving species,
diversity increases
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Extinction: process in
which groups of
organisms (species) die
out
Extinction is a natural
result of evolution and
natural selection.
Species go extinct when
they are unable to adapt
to changes in the
environment or compete
effectively with other
organisms. Well over 99
per cent of the species
that have ever lived have
gone extinct.
 Speciation
(responsible for the vast
number of species that we have on earth
today)
INCREASES
 Biodiversity
(the variety of all forms of
life, from genes to species, through to the
broad scale of ecosystems)
 Extinction
(the loss of a species
DECREASES
 Biodiversity
(the variety of all forms of
life, from genes to species, through to the
broad scale of ecosystems)