*Question*
Q: On the origin of species is a book by darwin that spells out what theory? Choices: - theory of reproduction - theory of the universe - theory of the computation - theory of evolution A:
**Answer**
theory of evolution

*Question*
Q: What is the major intracellular cation? Choices: - magnesium - sodium - glucose - potassium A:
**Answer**
potassium

*Question*
Q: Does the force of magnetism increase or decrease as the distance between objects increases? Choices: - increase - remain stable - fluctuate - decrease A:
**Answer**
decrease

*Question*
Q: What term means the percentage by mass of each element in a compound? Choices: - mass effect - elemental percent - biomass - percent composition A:
**Answer**
percent composition