*Question*
Q: What are identified by the azimuthal quantum number? Read this paragraph and choose the correct option from the provided answers: The sub-energy levels are identified by the azimuthal quantum number, . Choices: - ionic-energy level - covalent bonds - radioactivity - energy levels - sub-energy levels A:
**Answer**
sub-energy levels

*Question*
Q: What part of the rainforest commonly has ferns and other ground plants? Read this paragraph and choose the correct option from the provided answers: Ferns are common in the understory of the tropical rainforest. Choices: - forest floor - canopy layer - emergent layer - understory A:
**Answer**
understory

*Question*
Q: What is the diffusion of water known as? Read this paragraph and choose the correct option from the provided answers: Osmosis is the special case of the diffusion of water. It's an important means of transport in cells because the fluid inside and outside cells is mostly water. Water can pass through the cell membrane by simple diffusion, but it can happen more quickly with the help of channel proteins. Water moves in or out of a cell by osmosis until its concentration is the same on both sides of the cell membrane. Choices: - evaporation - electrolysis - hemostasis - osmosis A:
**Answer**
osmosis

*Question*
Q: Why must values of specific heat be looked up in tables? Read this paragraph and choose the correct option from the provided answers: Values of specific heat must generally be looked up in tables, because there is no simple way to calculate them. In general, the specific heat also depends on the temperature. Table 14.1 lists representative values of specific heat for various substances. Except for gases, the temperature and volume dependence of the specific heat of most substances is weak. We see from this table that the specific heat of water is five times that of glass and ten times that of iron, which means that it takes five times as much heat to raise the temperature of water the same amount as for glass and ten times as much heat to raise the temperature of water as for iron. In fact, water has one of the largest specific heats of any material, which is important for sustaining life on Earth. Choices: - lack of formulas - difficult to memorize - difficult to understand - difficult to calculate A:
**Answer**
difficult to calculate