Methods used to remove spilled oil from the surface of the ocean include I. containment boom and oil vacuums. II. chemical dispersants. III. large screens.

In all living cells dna controls cellular activities by

After cloud droplets form, what must happen to them for precipitation to occur?

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.