We could do thing with our hands without having to use some of our energy in getting up to try to balance on our two rear legs.
Answer:
...
Explanation:
Bohr's model of the atom states that electrons orbit an atom's nucleus in electron shells of increasing energy. ... Thomson's model, or the plum pudding model, it describes atoms as spheres of positively charged matter, in which electrons are embedded in
Answer:
enzyme
Explanation: enzyme is produced by a living substance which acts like a catalyst to bring about a specific biochemical reaction
I think it is the nervous system