When exposed to water, sodium chloride (NaCl) ____.

____________________ is measured as the number of species and the number of individuals in each of these species.  

One of the places on earth that is experiencing the highest extinction rates is 

Species that are only found in one location are called ____________________. 

How does the energy of an electron relate with the distance from the nucleus?

Although carbon dioxide contains carbon, it is not considered an “organic” compound because ____.

Nitrogen, with an atomic number of 7, has ____ electron(s) in the first energy level and ____ electrons in the second energy level.

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word.

The process by which the first cell of a new individual gives rise to a multicell adult is called _______.

Competition for resources between members of the same species is called ____________________.