NV APES – Living World

Ecosystem
a system of relationships between organisms and their habitat. It is an ecological community.
Law of Tolerance
the law sais that the distribution and number of organisms in an area depends on their tolerance level both chemically and physically
Keystone Species
a species that has a big impact on its ecosystem
Invasive Species
A foreign species that does not belong in an ecosystem and can possibly harm it significantly.
Indigenous Species
A species native to an ecosystem