Answer:
Cohesive and adhesive forces.
further, we also have vander waal's forces of attraction
Answer:Sunlight
Explanation:
Sunlight is a physical factor that really determine the amount of plant life available in an ecosystem. Plants depend on sunlight to produce their own food via photosynthesis. Hence in the absence of sunlight, the amount of plant life will drastically reduce in a given ecosystem. Sunlight is indispensable for plant growth.
Answer:
what is this i dont know what kind of math this is
Answer:
what is this pdf I cannot see your question