*Question*
Answer the following question given this paragraph: Wallace's paper on evolution confirmed Darwin's ideas. It also pushed him to publish his book, On the Origin of Species. The book clearly spells out his theory. It also provides evidence and logic to support it. 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*
Answer the following question given this paragraph: Potassium Potassium is the major intracellular cation. It helps establish the resting membrane potential in neurons and muscle fibers after membrane depolarization and action potentials. In contrast to sodium, potassium has very little effect on osmotic. Q: What is the major intracellular cation? Choices: - magnesium - sodium - glucose - potassium A:
**Answer**
potassium

*Question*
Answer the following question given this paragraph: 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*
Answer the following question given this paragraph: Percent Composition The elemental makeup of a compound defines its chemical identity, and chemical formulas are the most succinct way of representing this elemental makeup. When a compound's formula is unknown, measuring the mass of each of its constituent elements is often the first step in the process of determining the formula experimentally. The results of these measurements permit the calculation of the compound's percent composition, defined as the percentage by mass of each element in the compound. For example, consider a gaseous compound composed solely of carbon and hydrogen. The percent composition of this compound could be represented as follows: mass H 100% mass compound mass C %C = 100% mass compound. 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