Which of the following is an example of chemical control of nonnative species?

Non-native species can do a great harm to native species or ecosystem and there are many ways to control them. Net barriers are mechanical control. Pesticides and herbicides are chemical control. There are also natural (biological control) control, such as diseases and pests, and environmental control, by altering the environment.

Travel clerkdegree level: certificate or college degree preferred by employersdegree field: travel planning, travel, or tourism licensure and certification: business license may be required; voluntary certifications available construction carpenterrequired education: a high school dimploma and carpentry apprenticeship transportation managerdegree level: bachelor's degree in supply chain management or bachelor's degree in logistics degree field: supply chain management, systems engineering and business licence or certification: no legal requirement for a transportation to become certified but is recommended since certifications demonstrate commitment to excellence and a broader knowledge chief executive degree level: bachelor's degree; mba preferred degree field: liberal arts, business administration, public administration or field of specialty chosen (i.e health care administration)license or certificate: voluntary certification available

The skin in the outer ear canal has special glands that produce earwax. the fance name for this waxy stuff is cerumen.after the wax is produces, it slowly makes its way through the outer ear canal to the opening of the ear.