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.
The Pulownia tomentosa tree is known to become invasive. The U.S. Department of Agriculture Natural Resources Conservation Service lists the Paulownia tomentosa tree as a noxious weed. It is banned in Connecticut due to its potentially invasive nature. It is also listed as an exotic invasive pest plant in Tennessee.