a.
Biology, 31.05.2020 20:58, teresaramirezde4
Nonnative species are not always a negative factor, they become invasive species .
a.
as soon as they are introduced in an ecosystem
b.
as soon as they leave their original ecosystem
c.
when they start consuming the food meant for the native species
d.
when their presence become economically or environmentally damaging
e.
when they control other species
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Nonnative species are not always a negative factor, they become invasive species .
a.
a.
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