"What’s the difference between a living thing and one that’s not alive? Scientists don't agree. But we can say living organisms do things to suit themselves. They rearrange their surroundings for their own purposes.
"Even single living cells act with agendas. Macrophages in your immune system chase a bacterium across the slide, switching course as its prey tries to escape, before finally gobbling it up."
This topic is one of the most controversial areas of science. This video essentially EXPANDS the definition to include not only humans but all living things.
Click on the link below:
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