Final answer:
Humans became dominant on Earth due to our ability to adapt, use tools, communicate effectively, and advance technologically.
Step-by-step explanation:
Humans became dominant on Earth due to a combination of factors including our ability to adapt, use tools, and communicate effectively. Our evolution from earlier hominid species allowed us to develop complex societies and advance technologically. For example, the development of agriculture provided a stable food supply and allowed for the growth of larger populations. Additionally, humans' capacity for innovation and problem-solving has led to advancements in science, medicine, and technology, further solidifying our dominance on Earth.