The air density is so low in this layer of earth's atmosphere that this is the location we normally think of as the start of outer space. a) mesosphere b) stratosphere c) thermosphere d) troposphere

Explain two reasons you think it is important for scientists to search for new ways to treat cancer

Me with these questions if you’re it sure don’t answer

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.