The correct option is (c).
Explanation
Wind is a significant abiotic factor in the environment, defined physically as the movement of air relative to the Earth's surface. It plays a critical role in both climatic and biological processes.
- Statement 1 is Incorrect: Wind refers to moving air caused by differences in atmospheric pressure. It is not a static layer; rather, it represents the horizontal movement of air from high-pressure areas to low-pressure areas.
- Statement 2 is Correct: Wind is an essential component of the hydrological cycle (water cycle). It transports water vapor evaporated from water bodies to land masses, where it condenses to form clouds and precipitation. It also influences the rate of evaporation.
- Statement 3 is Correct: Wind acts as a mechanical carrier in ecosystems. It facilitates anemophily (pollination by wind) and aids in the dispersal of seeds and fruits (anemochory), thereby helping in the propagation of plant species.
Key Takeaway: Wind is the horizontal movement of air that functions as a vital abiotic factor, driving the water cycle and assisting in biological propagation through pollen and seed dispersal.