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Effects and control measures of effects of volcanic eruptions as an environmental hazard.

Answer Text:
Pests and Diseases as an Environmental hazard.
Pests- animals, insects and birds which are harmful to other animals and plants.
Effects
-Locusts and army warms destroy vegetation resulting in shortage of pasture for herbivores.
-Ticks, river flukes, tapeworms and fleas affect
animals by transmitting their diseases and weakening them.
-Jiggers cause woods in human feet through which infections may enter the body.
-Parasitic plants feed on the host plant leading to its eventual death.
-Cause problems in the provision of food and
maintenance of human health.
Control
-Use of chemicals e.g. fungicides, herbicides and pesticides.
-Developing plant species which are resistant to pests and diseases.
-Biological control e.g. control of tsetse flies by breeding sterile males
which are released to mate with females which occurs once in a lifetime thus reducing their population.
-Educate people on the proper use of chemicals to prevent resistance and environmental degradation.