What are the two major factors that lead to higher melting points in some ionic compounds (such as
mgo) with a higher melting point than other ionic compounds (such as nacl)? describe / explain each
one.

The electromagnetic force acts between what

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?