yes
Everything that they studied that had cells was alive, everything without them was not.
because they wanted to know more.
For the convenience of their identification and to know about their similarity and dis-similarity with others.
Scientists don't know everything, nor do they claim to know everything.There's a lot of compelling evidence to suggest that the dinosaurs were killed of by a massive meteorite impact.
To make it easier for scientists all over the world to understand what organisms other scientists refer to even though they may speak a different language. It also helps scientists understand the relationships between organisms.
They are smart and know everything
No, they don't. There is so many (beyond numbers) galaxies that it is impossible to know everything.
If has been proven by many scientists.
because everything is consider chemicals
i dont know help
Well, from what I know, living things are known as living organisms.
Scientists use various lines of evidence, such as the fossil record, comparative anatomy, embryology, and genetics, to show that living things have changed over time. By studying these pieces of evidence, scientists can construct evolutionary relationships and track changes in species over generations. This accumulation of evidence supports the theory of evolution.