Please please help I am so confused

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

(remember to paraphrase)1.  the water cycle in a forest produces sufficient enough rainfall to sustain the rich plant and animal life in it. in a dessert, the water cycle provides just enough water for the animals and plants that reside in it, but not near enough for the life that is in a rain forest.2. since florida is a peninsula, it is susceptible to more intense storms. thus, tornadoes can significantly damage homes and buildings. if severe enough, these storms can also  threaten lives. the residents may have to evacuate or take important measures to stay safe.

The correct answer for the highest occupied energy level of an atom is 5.