An insecticide kills many insects, but a few survive. Because of natural selection, which of the following is most likely to happen 1- Eventually the survivors will become resistant to insecticide

2- the survivors will reproduce, and the offspring will be resistant to the insecticide

3- the survivors will reproduce, but the offspring will be killed by another application of the insecticide

4- the survivors will continue to survive for many years beyond their normal lifespan

the survivors will reproduce, but the offspring will be killed by another application of the insecticide

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation:

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.