- Living organisms are dependent on the
environment and other species for their
survival.
- There is competition
for resources between different species
of animals or plants in the same habitat.
- Changes affecting
one species in a food web affect other
species that are part of the same food
web.A rapid change in the environment may
cause a species to become extinct, for
example, if:
- the environmental conditions change;
- a new species that is a competitor,
predator or disease organism of that
species is introduced;
- another organism in its food web becomes
extinct.
- Species have become extinct (or
are in danger of becoming extinct)
and this is likely to be due to human
activity.
- You must know two examples of
modern extinctions caused by direct human
activity, and two caused by indirect
human activity.
- Maintaining biodiversity is
an important part of using the environment
in a sustainable way.
- Biodiversity may be
important for the future development of food
crops and medicines.
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