All matter whether solid, liquid, gas has a chemical formula or elemental symbol.
Filtration may work, there are many types of filters capable of filtering specific types if compounds.
Caverns most commonly form in limestone
The answer is B. Platypus, as they are mammals that lay eggs.
Muscles - they are meat, and animals will eat the meat. They also decompose, leaving no trace of the remains.
Answer:
<h2> I don't know but my Answer is </h2><h3>from different environments ,each structure suits their environment better than the other's</h3>
