Researchers believed that floral scent can sometimes improve a person’s learning ability. they set up an experiment in which each of 22 subjects completed sets of pencil-and-paper mazes. each subject wore a floral-scented mask and an unscented mask, in random order. the researchers measured the time to complete the sets of mazes. this experimental design is:

How do ocean currents affect temperature? check all that apply. they carry cold water from the poles to the equator and cool air over land. they flow north and then south below the equator. they flow south and then north above the equator. they move warm water from the equator to the poles and heat air over land. they move east to west and create prevailing winds. they move west to east and create seasonal winds.

Witch layer of the atmosphere has the most air pressure

How would i answer this for an exam?