How this be done i really don't know how to due

What forms when chemical reactions combine pollution with sunlight?

How many molecules are in 6.0 moles of methane

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