The biggest reservoir of water on Earth is in
the ocean. Which reservoir is the 2nd largest
holder of water?

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

How is the carbon cycle related to global warming ?

When the solution concentration on the outside of a cell is greater than thesolution concentrate on the inside of the cell, what type of solution is the cellwithin?