Must be a under normal conditions on Earth. Must be occurring on Earth not man made. Must be not coming from living things or made from living things. Must have a fixed formula, made of specific chemicals. The atoms that make up the substance must be arranged in structure.

the glands which are associated with each description is given below:

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

anthropod traits:

a well-developed collarbone

rotating shoulder joints

partially rotating elbow joints

opposable thumb

similar dental formula