Which is a type of heat transfer that causes the air at the top floor of a building to be hotter than the air at the bottom floor of a building? •
conduction
convection
radiation
reflection​

I belive it is Convection

Explanation:

It is the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

B is correct give the credict to the person above me

Explanation:

have a nice day or night ;)

a, i am pretty sure.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.