a nonnative plant or animal species (IS1)
Invasive plant
Inversion layer
a barrier to clouds formed by a mass of warm air overlying a mass of cooler air (R1)
Invertebrate
an animal without a backbone or cartilage (C4)
Isolation
the condition of being solitary, remote, not subject to frequent introductions of new species (IS1)
Isotope
an atom of an element that has the same number of protons but different numbers of neutrons than other atoms…
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Knot
one nautical mile per hour (M1)
Lapse rate
the constant rate at which rising air cools (A2)
Larva
the early, free-living form of any animal that changes structurally when it becomes an adult or undergoes metamorphosis (A4, M1)
Lifting condensation level
the altitude at which water vapor condenses out of rising air, forming clouds and/or rain (R1)