Question

28.describe three aspects of the physical environment that support the existence of life on earth.

Explanation:

Key physical environment aspects supporting life include liquid water, atmospheric composition, and stable climate.

Answer:

1. Presence of liquid water, essential for biochemical processes in organisms.
2. Atmosphere containing oxygen (for respiration) and carbon dioxide (for photosynthesis).
3. Stable climate maintained by Earth's distance from the Sun, keeping temperatures within life-sustaining ranges.