Pitch is how high or low we hear a sound to be. If the frequency is higher, the pitch is higher. The unit of frequency is hertz. Ghz, or gigahertz, also can be used to measure frequencies. We can hear all the way up to 20,000 hertz! To conclude, the higher the frequency, the higher the pitch.
Several species of honeysuckle have become invasive when introduced outside their native range, particularly in New Zealand and the United States. Invasive species include L. japonica, L. maackii, L. morrowii, and L. tatarica.ost honeysuckle berries are attractive to wildlife, which has led to species such as L. japonica and L. maackii spreading invasively outside of their home ranges. Many species of Lonicera are eaten by the larvae of some Lepidoptera species â see a list of Lepidoptera that feed on honeysuckles.
These species can be distinguished by the following differences: 1  O. monacantha is a relatively tall shrub or tree-like plant (usually 2-5 m tall) with flattened and elongated (oblong or obovate) cladodes. 2  These cladodes are hairless and have one or two large spines on most of the areoles on their surfaces.ntroduced, naturalised or invasive in East Africa. Opuntia monacantha is invasive in parts of Kenya, naturalised in parts of Tanzania and is present in Uganda (A.B.R. Witt pers. obs.).