Please help !! how come the first carbon in glucose is considered to be an aldehyde while the rest are hydroxyl. why can't they all be the same?
this is for an assignment. thank u.

The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe