A stable atom with neutral charge has the same number of protons and electrons.
While the charge of protons is positve and the charge of electrons is negative, the magnitude of their charges are equal.
Then, in order to the atom be neutral the positve charge equals the negative charge, and so the number of protons equals the number of electrons.
Answer:
Examples of biotic factors are animals, birds, plants, fungi, and other similar organisms. Introduction In ecology and biology, abiotic components are non-living chemical and physical factors in the environment which affect ecosystems
There are more than simply 4 biological compounds in the human body. I suppose to categorise, the question is hinting towards the molecules like Carbohydrates ( Poly and mono saccharides ) Proteins ( Polypeptides Made of amino acids) and Fats. There is also water, but I'm hesitant to class that as a biological compound, as it's not organic.
Nerves are cells that can detect any type of pressure, movement, or anything of that nature. If we didn't have nerves, we couldn't feel pain. If the nerves in a foot are damaged, you wouldn't feel the pain of it being burned.
