Multiple choice question, someone please answer

If the environment changes what is the first thing a species will do to survive

Why is water called the universal solvent?   a. water is a polar substance that dissolves nonpolar substances.  b. water can act as a solvent in many different solutions.  c. water is a nonpolar substance that dissolves polar substances.  d. water can act as a solute in many different solutions.this is the correct answer water can act as a solvent in many different solutions.

How do the lungs excrete waste material from the body? the lungs push carbon dioxide from red blood cells out of the body through exhalation. the lungs convert poisonous gas into oxygen that the body can use. the lungs push nitrogen into the digestive system so that it can be removed by the body. the lungs protective cells in the body break down gaseous urea.