What is the atomic number of the two isotopes of nitrogen? -5 -6 -7 -8 -9

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li