You would look for the chemical and physical properties because by identifying what properties those metals fit into it is easier to compare and contrast what metal they are
If I'm not mistaken id say its small temperature changes
Through the process of photosynthesis
The answers that apply are;
Psychology is a field that endeavors to learn the mechanisms of the mind and how this influences thought, feelings, and behavior. Therefore a psychologist or therapist, who is able to understand this relation, has the capacity to evaluate his thoughts and actions and can help another person with psychological problems.