The water cycle is the process when water circulates from the oceans on the Earth, the atmosphere, land, this also involves rainfall and snow, sewers in rivers and streams, and then it returns to the atmosphere by evaporation and transpiration. Humans impact the water cycle by irrigation, urbanization, deforestation, and storing water in reservoirs.
Since the object is dropped from some height so its initial speed must be zero
acceleration of the object is due to gravity
so we can use kinematics to find the time it will take to drop by x = 22 m



Now the speed after 2.12 s will be given as



so above is the speed and time
I think it is building and managing of irrigation systems
Every chemical "compound" is. Some examples of compounds include ...
Salt
Carbon dioxide
Alcohol
Water
DNA