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It works in this case just as it does in resistance to antibiotics. When the environment is changed, those living in it will be either affected or not. Some bacteria or mosquitoes will not be affected and some will. The affected ones will die and the others will not. Those that don't die will have genes that allow this to happen for them. They will pass those genes on to their offspring. Those offspring will also be resistance to what every pesticide or antibiotic being used to kill them. You are seeing actual natural selection and evolution at work.
Penicillin was used in WW2 in 1943. Today, there are bacteria that are resistant to every antibiotic that we have. Some are resistant to 23.
Unless the insecticide kills every mosquito, the ones that survive will grow in numbers and we will have to find something else. The most we usually can hope for is just to be able to control the numbers.
What else can I help you with?
Explain why when DDT is used the numbers of mosquitoes first go down but then start increasing again?
When DDT is used, most of the mosquitoes are killed initially. However some develop a resistance and begin to repopulate.
What kills mosquitoes?
insectisides,pesticides,chemicals like ddt etc. kill mosquitoes
Can DDT cause malaria?
No, DDT does not cause malaria. DDT is actually used to control the mosquito populations that spread malaria by killing the mosquitoes that carry the disease. Using DDT in a controlled and targeted manner can help reduce the incidence of malaria.
Why is ddt still used today even though it is harmful?
DDT is very efficient against mosquitoes.
Why do predatory birds die when DDT is sprayed onto land or water?
Your premise is incorrect; DDT does not kill birds. DDT kills mosquitoes.
Why is the spread of malaria increasing?
There has been increasing resistance of mosquitoes to DDT. The P. falciparum became resistant to chloroquine. These two problems together was responsible for increasing the cases of malaria.
Was ddt used to kill bad bugs 50 years ago?
Yes, DDT is very efficient against mosquitoes and other insects.
Why is DDT banned?
DDT (dichlorodiphenyltrichloroethane) is an insecticide. Its most known usage is killing mosquitoes that carry malaria. However, there are resistant mosquitoes, and DDT has some severe health and environmental risks, and thus its usage is highly restricted.
Why human cells not getting resistance towards tobacco?
the ants getting resistance to DDT while the humans not getting resistance to tobacco? the ants getting resistance to DDT while the humans not getting resistance to tobacco- why
Is DDT illegal?
The use of DDT was banned in the USA in 1973 although it is still in use in some other parts of the world
Is DDT in the fruit the US imports from Mexico?
No. DDT was phased out in Mexico since 2002, with other EPA-approved chemicals used both as insecticides as well as to kill Malaria-transmitting mosquitoes.
Why was ddt used in borneo?
DDT was used in Borneo primarily as a pesticide for controlling malaria-carrying mosquitoes during the mid-20th century. The goal was to reduce the spread of malaria and protect public health. However, the long-term use of DDT had harmful environmental impacts and led to the decline of certain wildlife populations in the region.
