What does it mean when an animal is thirsty?
1. Too many water molecules
have left the cells.
2. Too many water molecules
have entered the cells.
3. Water molecules are not
moving across the cell
membrane
4. All of the above

Which of the following reasons best explains why a scientist would want to replicate gregor mendel's pea plant experiment? a. to discover new aspects of the natural world b. to test the predictions of current theories c. to explain recently observed phenomena d. to test the conclusions of prior investigations