There are a lot of endangered animals in this world, and the numbers are increasing constantly as their habitats are destroyed by global warming and urbanizing humans. why don't conservative biologists just stick representative animals in zoos so that their numbers can be bolstered and their existence ensured?

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds