Answer the following question given this paragraph: Colligative properties have practical applications, such as the salting of roads in cold-weather climates. By applying salt to an icy road, the melting point of the ice is decreased, and the ice will melt more quickly, making driving safer. Sodium chloride (NaCl) and either calcium chloride (CaCl 2 ) or magnesium chloride (MgCl 2 ) are used most frequently, either alone or in a mixture. Sodium chloride is the least expensive option, but is less effective because it only dissociates into two ions instead of three. Q: By applying salt to an icy road, the melting point of the ice is what? Choices: - concentrated - compounded - increased - decreased A:
decreased
Answer the following question given this paragraph: Major climate types are based on temperature and precipitation. Latitude plays an important role in determining the climate of a region. However, many other factors play a role in climate. Oceans and mountain ranges influence climate in the same ways worldwide ( Figure below ). You can see where the climate types are on the map, and then read about them below. Q: Latitude plays an important role in determining what in a region? Choices: - drought - landscape - migration - climate A:
climate
Q: Answer the following question given this paragraph: The driest climates are deserts . Most occur between about 15 and 30 latitude. This is where dry air sinks to the surface in the global circulation cells. Deserts receive less than 25 centimeters (10 inches) of rain per year. They may be covered with sand dunes or be home to sparse but hardy plants (see Figure below ). With few clouds, deserts have hot days and cool nights. Q: What has hot days and cool nights, and are typically covered with sand dunes or sparse but hardy plants? Choices: - rain forest - tundra - arctic - deserts A:
A: deserts
Question: Answer the following question given this paragraph: Simple diffusion occurs when a substance diffuses through a cell membrane without any help from other molecules. The substance simply passes through tiny spaces in the membrane. It moves from the side of the membrane where it is more concentrated to the side where it is less concentrated. You can see how this happens in Figure below . Q: What occurs when a substance diffuses through a cell membrane without any help from other molecules? Choices: - simple filtration - visible diffusion - visual diffusion - simple diffusion A:
Answer: simple diffusion
*Question*
Answer the following question given this paragraph: Q: Activated macrophages and neutrophils discharge what that signals molecules that enhance an immune response? Choices: - alkaloids - pathogens - nucelotides - cytokines A:
**Answer**
cytokines
Q: Answer the following question given this paragraph: Q: What is the name of the hollow nerve cord along the back of chordates? Choices: - zetacord - mesoderm - phloem - notochord A:
A: notochord