Wha is Definition of a testable question

Someone me with this: a mineral' is determined by its actomic structure.

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

There are only about 250,000 known fossil species. true or false