Water is called the universal solvent becausea)it is a nonpolar substance.  b)its molecule has no charge.  c)it is used around the world.  d)it dissolves a variety of substances.

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis