It is a completely true statement that the <span>created "kinds" like "species" is not easy to define. The correct option among the two options that are given in the question is the first option. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.</span>
It is called THERAPEUTIC INDEX. Therapeutic index is the comparison of the amount of a particular drug that causes the desired therapeutic effects and the amount that causes toxicity. The index can be low or high. A drug with a low therapeutic index will require only a small increase in dose to produce toxic effects in users.
Cations are positive so they have less electrons than protons, while anions are negative so they have more electrons.
Nuclear reactors use hydrogen and they are an up and coming energy source.
There are also hydrogen fuel cells.
