Why should you be careful when taking antibiotic treatments? A placebo effect may be present from their use.
Improper use can lead to bacterial resistance.
Their use is known to cause many side effects.
They may also kill helpful viruses in your body.

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

answer; synapse;

answer: um

explanation: find shelter