Water is the molecule of life because it can exist in three different states: Liquid, Ice, Gas. We know that Ice molecules are: (a) closer together than liquid molecules
(b) farther away than liquid molecules
(c) the same distance between Ice molecules and liquid molecules

Prokaryotes that live in extreme conditions such as hypersaline, thermal vents and the arctic.
(a) Bacteria
(b) Plants
(c) Animals
(d) Archaea

What does adaptation mean in a biological context?
(a) the way in which an individual changes in relation to its environment
(b) the way in which an individual changes in relation to fashion
(c) the way in which an individual changes in relation to peer pressure
(d) all of the above

The reaction of KCI + H2O -> K+ + CL- is .
(a) Ionic
(b) Covalent
(c) Polar