Q: Answer the following question given this paragraph: Observations raise questions that lead to scientific investigations. Observations also help scientists gather evidence in investigations. Q: What can help scientist gather information for an investigation? A:

OPTIONS:
- variables
- controls
- conclusions
- observations

A: observations

input: OPTIONS:
- cognitive rhythm
- auditory rhythm
- life cycle
- circadian rhythm Now, answer this question: Answer the following question given this paragraph: Circadian rhythms are regular changes in biology or behavior that occur in a 24-hour cycle. In humans, for example, blood pressure and body temperature change in a regular way throughout each 24-hour day. Q: What are regular changes in biology or behavior that occur in a 24 hour cycle? A:
A:
output: circadian rhythm

Answer the following question given this paragraph: Digestion consists of mechanical and chemical digestion. Q: There are two types of digestion, mechanical and what else? A:

OPTIONS:
- radiation
- mineral
- thermal
- chemical

Answer: chemical

Problem: OPTIONS:
- revolution
- ellipse
- nucleus
- orbit
Q: Answer the following question given this paragraph: To figure out how the solar system formed, we need to put together what we have learned. There are two other important features to consider. First, all the planets orbit in nearly the same flat, disk-like region. Second, all the planets orbit in the same direction around the Sun. These two features are clues to how the solar system formed. Q: All planets exhibit the same or nearly the same direction and shape of what path around the sun? A:
Answer: orbit

Problem:OPTIONS:
- dermis
- callus
- cartilage
- epidermis

Answer the following question given this paragraph: Hair follicles are structures where hairs originate. Each hair grows out of a follicle, passes up through the epidermis, and extends above the skin surface. Q: A hair grows out of a follicle and passes through what before extending above the skin surface? A:
****
A: epidermis

Problem:OPTIONS:
- animal chemistry
- inorganic chemistry
- nuclear chemistry
- organic chemistry

Answer the following question given this paragraph: Summary 20.1 Hydrocarbons Strong, stable bonds between carbon atoms produce complex molecules containing chains, branches, and rings. The chemistry of these compounds is called organic chemistry. Hydrocarbons are organic compounds composed of only carbon and hydrogen. The alkanes are saturated hydrocarbonsthat is, hydrocarbons that contain only single bonds. Alkenes contain one or more carbon-carbon double bonds. Alkynes contain one or more carbon-carbon triple bonds. Aromatic hydrocarbons contain ring structures with delocalized electron systems. Q: Strong, stable bonds between carbon atoms produce complex molecules containing chains, branches, and rings; the chemistry of these compounds is called what? A:
****
A:
organic chemistry