Answer:
Bipedal posture allowed arms to be free to develop and use tools.
Explanation:
An intrusion is the action of intruding or intruding. I hope I helped a little!! :-)
the same goes for the other
Answer: Photosynthesis is important for all living organisms because it provides the oxygen needed by most living creatures for survival on the planet. Reasons Why Photosynthesis Is Important It is the number one source of oxygen in the atmosphere. It contributes to the carbon cycle between the earth, the oceans, plants and animals.
Explanation: Hope this helps!
