input: OPTIONS:
- earthquake
- avalanche
- tsunami
- landslide Now, answer this question: Answer the following question given this paragraph: Landslides are sudden and massive falls of rock down a slope. Landslides may be very destructive or even deadly. Slump and creep are slower types of mass wasting. Q: What occurs when there is a sudden and large falling of rocks down a slope? A:
A:
output: landslide

Answer the following question given this paragraph: We learned in the previous concept, "Scientific Explanations and Interpretations," that the average global temperature has been on the rise. Scientists know that carbon dioxide is a greenhouse gas . Greenhouse gases trap heat in the atmosphere. This leads us to a question:. Q: Where do greenhouse gases trap heat? A:

OPTIONS:
- ground
- space
- altitude
- atmosphere

Answer: atmosphere

Problem: OPTIONS:
- fatty junctions
- solid junctions
- special junctions
- tight junctions
Q: Answer the following question given this paragraph: In addition to holding cells together, tight junctions play a role in the transport of materials. Tight junctions prevent the passage of molecules and ions through the space between cells. So these molecules and ions must actually enter cells (either by diffusion or active transport) in order to proceed through a tissue. This allows tight junctions to indirectly play a role over what substances are allowed into a specific cell. Tight junctions play this role in maintaining the blood-brain barrier. Q: What can prevent the passage of molecules and ions between cells, such as in the blood-brain barrier? A:
Answer: tight junctions

Problem:OPTIONS:
- a bio reaction
- spontaneous mutation
- cellular respiration
- a chemical reaction

Answer the following question given this paragraph: A chemical reaction is a process that changes some chemical substances into other chemical substances. The substances that start a chemical reaction are called reactants . The substances that form as a result of a chemical reaction are called products . During the reaction, the reactants are used up to create the products. For example, when methane burns in oxygen, it releases carbon dioxide and water. In this reaction, the reactants are methane (CH 4 ) and oxygen (O 2 ), and the products are carbon dioxide (CO 2 ) and water (H 2 O). Q: What is a process that changes some chemical substances into other chemical substances? A:
****
A: a chemical reaction

Answer the following question given this paragraph: Immovable joints allow no movement because the bones at these joints are held securely together by dense collagen . The bones of the skull are connected by immovable joints. Q: What secures together immovable joints and prevents them from moving? A:
OPTIONS:
- light collagen
- light cartilage
- dense cartilage
- dense collagen
dense collagen

Answer the following question given this paragraph: To keep their flight muscles well supplied with oxygen, birds evolved specialized respiratory and circulatory systems. Birds have special air sacs for storing extra air and pumping it into the lungs. They also have a relatively large heart and a rapid heart rate. These adaptations keep plenty of oxygenated blood circulating to the flight muscles. Q: Birds have a relatively large heart and a rapid what? A:
OPTIONS:
- lifespan
- blink rate
- digestive process
- heart rate

Answer:
heart rate