Identify the process most likely responsible for a mosquito initially becoming resistant to deet?

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment

Which description provides the best objective summary of the article in the passage?