Original sentence: Evidence supporting this hypothesis is sparse, and it is not widely accepted by biologists.However, such proof would be difficult to find, as many near-shore environments available to our early ancestors are now submerged.Such observations have led, in part, to the aquatic ape hypothesis
Edited sentence: Such observations have led, in part, to the aquatic ape theory.Unfortunately, proving this hypothesis will be difficult because of the fact that many near-shore environments available to our early ancestors are now submerged due to a global rise in sea level