Answer: The correct answer is that it must be based on scientific observations that can be repeated in a controlled setting. Explanation: This controlled setting, which replicates the real world encounters is known as scientific experiments. Experiments permit for a smaller scale world where the results can be determined with the manipulation of specific elements in the controlled setting. Experiments assist in the understanding of the natural world.
Active transport requires energy passive transport does not
Answer:
The help determine age, gender, race, and height
