user: Q: 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?   A:

OPTIONS:
- concentrated
- compounded
- increased
- decreased

A: decreased

input: OPTIONS:
- hydrogen and nutrients
- acid and nutrients
- fluid and nutrients
- oxygen and nutrients Now, answer this question: Answer the following question given this paragraph:      Q: The vertebrate circulatory system enables blood to deliver ________ and remove wastes throughout the body.   A:
A:
output: oxygen and nutrients

Answer the following question given this paragraph:   An element is a pure substance. It cannot be broken down into other types of substances. Each element is made up of just one type of atom. An atom is the smallest particle of an element that still has the properties of that element.   Q: What is the term for the smallest particle of an element that still has the properties of that element?   A:

OPTIONS:
- nucleus
- electron
- neutron
- atom

Answer: atom

Problem: OPTIONS:
- muscle
- cuticle
- membrane
- cartilage
Q: Answer the following question given this paragraph:   Cartilage is a tough, flexible connective tissue that contains the protein collagen. It covers the ends of bones where they meet. The gray tissue in Figure below is cartilage.   Q: What is the term for  tough, flexible connective tissue that contains the protein collagen?   A:
Answer: cartilage

Problem:OPTIONS:
- momentum
- force
- acceleration
- velocities

Answer the following question given this paragraph:   If you’ve ever seen a kayak move down a fast-moving river, you know that remaining in the same place would be hard. The river current pulls the kayak along. Pushing the oars back against the water can move the kayak forward in the water, but that only accounts for part of the velocity. The kayak’s motion is an example of classical addition of velocities. In classical physics, velocities add as vectors. The kayak’s velocity is the vector sum of its velocity relative to the water and the water’s velocity relative to the riverbank.   Q: The kayak’s motion in the water is an example of classical addition of what?   A:
****
A: velocities

Problem:OPTIONS:
- the percent of population
- percent density
- total density
- population density

Answer the following question given this paragraph:   Population density just gives the average number of individuals per unit of area or volume. Often, individuals in a population are not spread out evenly. Instead, they may live in clumps or some other pattern (see Figure below ). The pattern may reflect characteristics of the species or its environment. Population distribution describes how the individuals are distributed, or spread throughout their habitat.   Q: The average number of individuals per unit of area can be expressed as what?   A:
****
A:

assistant: population density