1. The independent variable in the experiment is the amount of salt in the water.
3. False. Diffusion is the movement of molecules, ions from an area of higher concentration to an area of lower concentration without the use of energy. The movement is down the concentration gradient hence it is spontaneous.
A scientist conducted an experiment to determine how the amount of salt in a body of...
1. Which of the following are the sites within the human body where carbon dioxide and oxygen are exchanged? A. Alveoli B. Arteries C. Synapses D. Venules 2. Which of the following describes the most important reason for repeating an experimental investigation? A. To verify the validity of the original findings B. To expand upon the original investigation C. To manipulate the independent variable D. To attempt to disprove the hypothesis 3. Lithium has an atomic number of 3 and...