An element is a substance represents by a symbol. chemical symbols have or letters. the first letter of a chemical symbol is always a letter and the second letter is always a letter.

Explanation:

An element is a _distinct substance represented by a __chemical symbol. Chemical symbols have _one__ or _two__ letters. The first letter of a chemical symbol is always a _Capital letter and the second letter is always a _small letter.

Elements are distint substances that cannot be split up into simpler substances. Such substances are made up of one kind of atom. Each of them is usually symbolised by a capital letter or a capital letter followed by a small letter derieved from the English or latin or greek name of the element.

dynamic equilibrium is the answer.

i think the answer is terrae but not 100 percent sure. ▓▬▬ §