Helium has an atomic number of two, so its outer energy level is full. helium is considered neutral inert an anion a cation

Why do carbohydrate molecules function so well as fuel for the body?

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring