16. How can you prove that microorganisms clean the environment?
17. What are carriers?
18. How to prevent spreading of mosquitoes??
20. Name the diseases caused in Animals.
Answers
Answer:Microorganisms help in cleaning up the environment. They decompose dead and decaying matter from plants and animals, convert them into simpler substances which are later used up by other plants and animals. Thus, they are used to breakdown harmful substances.
17. An individual capable of transmitting a pathogen without displaying symptoms is referred to as a carrier. A passive carrier is contaminated with the pathogen and can mechanically transmit it to another host; however, a passive carrier is not infected.
18. Don't let water stagnate: Mosquitoes breed by laying eggs in stagnant water. ...
Clear the litter: Do not allow any debris to collect around your house, especially in gardens, compounds, or yards.
20. Cat Scratch Disease (Bartonella henselae)
Explanation:
Answer:
16 Waste water often contains organic materials that are decomposed by microorganisms, which use oxygen in the process, and BOD is the amount of oxygen that is used by such organisms in breaking down the waste matter. The microorganisms that are used already exist in nature and this prevents any harm to the environment.
17 A carrier is an individual who carries and is capable of passing on a genetic mutation associated with a disease and may or may not display disease symptoms. Carriers are associated with diseases inherited as recessive traits. ... An individual having one normal allele and one mutated allele does not have the disease.
18 Empty plastic swimming pools when not in use. Use screens on doors and windows. Use patio insecticides such as Permethrin (pesticide and repellent) and Allethrin (candles and lanterns. Wear long sleeve shirts, long pants, socks and closed shoes to avoid mosquito bites at dusk and dawn especially.
20 any unusual or unfamiliar disease in animals, birds or aquatic animals.
. Acute hepatopancreatic necrosis disease.
. Aflatoxicosis.
. African swine fever. ...
. Akabane.
. Anthrax. ...
. Australian bat lyssavirus. ...
. Avian influenza (bird flu)
. Avian paramyxovirus in pigeons.
Explanation:
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