How many neutrons does nitrogen 16 have

Help me please 人´∀｀)

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

What does the cell nucleus do or, how does it function?

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains