Some protozoans have special organelles called contractile vacuoles that continually eliminate excess water from the cell. The presence of these organelles, and the constant influx of water from the outside environment tells you that the environment

is hypotonic to the protozoans

Explanation:

The constant influx of water from the outside environment of the cell tells that the environment is hypotonic to the cell.

A hypotonic environment is one with a lower solute concentration than the cytosol. Hence, water osmotically moves from the environment into the cells of the protozoans. The water needs to constantly be removed from the cells, otherwise, they will become turgid and lyse away their contents.

and after water is usually warmed by the sun the water temperature raises and then evaporates .

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.