What is the molarity of 3.0 L solution containing 250 g of Nal​

What layer of the atmosphere is directly above the troposphere?

1. list three scientific reasons cockroaches may fly.

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