The correct option is 1, 2, 3 and 4.
Explanation
The continuous exchange of water between the atmosphere, the oceans, and the continents is known as the Hydrological Cycle (or Water Cycle). This cycle ensures the circulation of water through the Earth's systems via various physical processes.
Analysis of the Processes:
- 1. Evaporation (Correct): This is the process by which water transforms from a liquid to a gaseous state (water vapor). It primarily occurs from the surface of oceans, lakes, and rivers, transferring water from the surface to the atmosphere.
- 2. Transpiration (Correct): This refers to the loss of water as vapor from the aerial parts of plants (leaves). It contributes significantly to atmospheric moisture. Collectively, evaporation and transpiration are often referred to as evapotranspiration.
- 3. Condensation (Correct): This is the process where water vapor in the air cools and changes back into liquid water or ice. This leads to the formation of clouds, fog, and dew, which are precursors to precipitation.
- 4. Precipitation (Correct): This occurs when condensed water droplets or ice crystals in clouds become large enough to fall under gravity. It returns water from the atmosphere to the continents and oceans in the form of rain, snow, or hail.
Since all four processes are integral components of the hydrological cycle, they are all correct.
Key Takeaway: The Hydrological Cycle is driven by solar energy and involves the continuous movement of water through evaporation, transpiration, condensation, and precipitation.