It is the study of psychological and behavioral processes in health, illness, and healthcare.[1] It is concerned with understanding how psychological, behavioral, and cultural factors contribute to physical health and illness. Psychological factors can affect health directly. For example, chronically occurring environmental stressors affecting the hypothalamic–pituitary–adrenal axis, cumulatively, can harm health.
<span>Dr. Nelson studies the psychological factors that seem to be associated with the development of heart disease. Dr. Nelson specializes in health psychology.</span>
The further away means it gets a weaker source if light and less reaches it.
Explanation:
Since the plant produces oxygen in photosynthesis, you can use this to measure the rate of photosynthesis. Which is affected by light and it's availability.