Solubility and Molarity. Please help i have no clue what i’m doing LOL

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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

How do limiting factors most affect population size? ostop population growthrestrict population growthincrease population sizeresult in positive impactso