The organelles that perform roles equivalent to circulatory are ribosomes,endoplasmic reticulum,and the golgi body
<span> sunlight, little water, air, rock these are some :)</span>
It is a semiconductor. A semiconductor can allow a bit of energy to flow through. It is also a metalloid. Hope this helps! :)
Answer:
Bipedal posture allowed arms to be free to develop and use tools.
Explanation: