There are man chemical and physical changes such as geno and pheno.
<span>Your skeleton is internal, which means it is contained inside of you. A grasshopper has an external skeleton, or exoskeleton, with everything contained inside it. </span>
Answer:
A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom. ... Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds.
Explanation:
Answer:
Underground mining has lower rates of fatal and nonfatal injuries than surface mining.
True...........................
