In this sentence: “Some scientists believe that the species known as White’s tree frog is able to control the amount of water that is evaporated through its skin and that its body temperature being controlled in this way.” why is “being” grammatically incorrect?

In this sentence: “Some scientists believe that the species known as White’s tree frog is able to control the amount of water that is evaporated through its skin and that its body temperature being controlled in this way.” why is “being” grammatically incorrect?