If you're on Edgeunity I pretty sure the answer is "The opportunity for advancement or promotion could result in higher pay"
Your lungs are organs in your chest to allow your body to take oxygen from the air. They also help remove carbon dioxide from your body
Or because it is the word combing the two sentences
Unlike the other species, the humans were able to use their superior brain power in order to construct sophisticated tools. These tools were able to perform tasks that were not possible by only using what nature provided as strengths. This gave a huge advantage for the humans, as by using the tools they were able to transform the environment as it suited them, thus controlling it. This was not achieved individually though, but instead the humans have developed complex social structure, so they were cooperating for the common good. Working together in large groups, and having technology on their side, the humans propelled themselves on top, becoming the biggest force among the living organisms.
