Humans have collected and grown mushrooms for food for thousands of years, and foods rich in chlorine are mushrooms, parsley, sweet potato, rhubarb, and especially tomato. Given these facts, humans have collected and grown foods rich in what for thousands of years among the following options:
- glucose
 - bacteria
 - ferns
 - chlorine
 - acetic acid
 - Energy.
 - heat energy
 - Energy


 

    chlorine     