Ingles- primera investigación

Questions:

1. – How did the electric current originate? / how was it

2. - Which are there electric current types ?

3. - What is the electrochemistry ?

4. - In our body, does the electric current exist? / Is there electric current in our body?

5. - Which are the electrochemistry?

7. - What are the electronic elemts?

8. - Explain the battery parts.