If u answer i will put u as brainiest answer and give u a thank uat the earth's surface, warm air expands and rises, leaving behind what is known as an area of _________ cold air is dense and sinks to the surface to create what is known as an area of ____________answer choices:low pressurehigh pressurecondutionconvection if u answer i will put u as brainiest answer and give u a thank u