A person who is paralyzed can use an electronic device implanted in the brain to control robotic hands. How is that possible?

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

All phases of matter may have a fixed mass