*Question*
Q: What helps represent age-sex structure of the population? Read this paragraph and choose the correct option from the provided answers: The age-sex structure of a population is the number of individuals of each sex and age in the population. Age-sex structure influences population growth. It is represented by a population pyramid. The number of survivors at each age is plotted on a survivorship curve. Choices: - habitat chart - density graph - biome model - population pyramid A:
**Answer**
population pyramid

*Question*
Q: What builds up in an artery and reduces blood flow? Read this paragraph and choose the correct option from the provided answers: Plaque buildup in an artery reduces blood flow through the vessel. Choices: - pressure - calcium deposits - surface tension - plaque A:
**Answer**
plaque

*Question*
Q: Potential energy is present in objects that are what? Read this paragraph and choose the correct option from the provided answers: Potential energy is present in objects that are ______________. Choices: - crystals - rigid - unstable - elastic A:
**Answer**
elastic

*Question*
Q: What 3 types of friction occur between solid surfaces? Read this paragraph and choose the correct option from the provided answers: Friction is the force that opposes motion between any surfaces that are in contact. There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Fluid friction occurs in liquids and gases. All four types of friction are described below. You can see a video demonstration of the different types at this URL:. Choices: - static , arching , rolling - static,desending,sliding - static , ascending , rolling - static, sliding, rolling A:
**Answer**
static, sliding, rolling