The deep smooth areas of the ocean floor are known as

Providing immunity by injecting the body with a weakened form a pathogen is known as

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.