Answer the following question given this paragraph: Did you ever hear an echo of your own voice? An echo occurs when sound waves bounce back from a hard object. The man in Figure below is trying to create an echo by shouting toward a rock wall. When the sound waves strike the rock wall, they can't pass through. Instead, they bounce back toward the man, and he hears an echo of his voice. An echo is just one example of how waves interact with matter. Q: What sound can be heard when sound waves bounce back from a hard object? A:
OPTIONS:
- loop
- eerie
- boom
- echo
echo

Answer the following question given this paragraph: Electromagnetic waves vary in their wavelength, frequency, and energy. The full range of electromagnetic waves makes up the electromagnetic spectrum. Q: What term is used to describe the full range of electromagnetic waves? A:
OPTIONS:
- electromagnetic scale
- electromagnetic series
- mechanical spectrum
- electromagnetic spectrum

Answer: electromagnetic spectrum

Question: Answer the following question given this paragraph: Q: Each organism inherits one of what item for each gene from each parent? A:
OPTIONS:
- molecule
- phenotype
- cell
- allele
Answer: allele

input with options: Answer the following question given this paragraph: Perhaps the most familiar liquid-solid solution is dental amalgam, used to fill teeth when there is a cavity. Approximately 50% of the amalgam material is liquid mercury to which a powdered alloy of silver, tin and copper is added. Mercury is used because it binds well with the solid metal alloy. However, the use of mercury-based dental amalgam has gone under question in recent years because of concerns regarding the toxicity of mercury. Q: The use of mercury-based dental amalgam has gone under question in recent years because of concerns regarding what? A:
OPTIONS:
- the expense
- the oxygen
- the variability
- the toxicity
output: the toxicity

Q: Answer the following question given this paragraph: Figure 4.16 Lactic acid fermentation is common in muscles that have become exhausted by use. Q: What is common in muscles that have become exhausted by use? A:

OPTIONS:
- Blood Acid Fermentation
- vibration acid fermentation
- clumps acid fermentation
- lactic acid fermentation

A: lactic acid fermentation

Answer the following question given this paragraph: Birds have a sac-like structure called a crop to store and moisten food that is waiting to be digested. They also have an organ called a gizzard that contains swallowed stones. The stones make up for the lack of teeth by grinding food, which can then be digested more quickly. Both structures make it easier for the digestive system to produce a steady supply of nutrients from food. Q: Where do birds store and moisten food that is waiting to be digested? A:
OPTIONS:
- nest
- tree
- gullet
- crop
crop