Do vaccines work against viruses and bacteria?

Vaccines definitely work against viruses and bacteria.

Explanation: Vaccines are the biological preparation that improves the immune system to fight against a certain disease. A vaccines work by introducing the pathogens in the immune system. In response to the these pathogens immune system start producing antibodies to fight against the disease. so next time when pathogens attack antibodies are able to fight better then before.

b brown mice / white sand dunes

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.