It has been discovered that an insect pest is no longer being controlled by an insecticide that has been used on a farm for years. Suggest two things the farmer could do to control the problem. a

Answerair masses develop near the equator are warm; tropical air mass

This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.