Which factor within a population could be studied to determine whether the population is evolving? a. allele frequency b. number of individuals c. reproduction method d. age of individuals

It has to be allele frequency. I just read the PDF (I'm taking the test too) and a sentence says " if a particular allele's frequency changes over time, the population is evolving" This should be correct or I will throw my computer lol

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass

Calcinosis is the diagnostic term that means an abnormal buildup of calcium on the kneecap (patellar) surface. it is a term uses to describe a group of disorders in which calcium deposits form in the skin. it is also referred to the abnormal deposit of calcium phosphate.