Answer:
False.
Step-by-step explanation:
A region can be defined as an area that shares similar features either natural or artifical, physical or environmental. The region can be distinguished based on language, religion, climate, government, etc. A region does not have fixed boundaries always.
For instance, the Amazon river is a region situated in South America. This region is distinguished based on warm temperatures, heavy rainfall, etc.
Thus the statement that a region is distinguished only by its climate is false. Therefore the given statement is false.