Answer the following question given this paragraph: Graphite is one of three forms of crystalline, or crystal-forming, carbon. Carbon also exists in an amorphous, or "shapeless," form in substances such as coal and charcoal. Different forms of the same element are called allotropes. Besides graphite, the other allotropes of crystalline carbon are diamond and fullerenes. All three forms exist as crystals rather than molecules. In a crystal, many atoms are bonded together in a repeating pattern that may contains thousands of atoms. The arrangement of atoms in the crystal differs for each form of carbon and explains why the different forms have different properties. For an entertaining, video-game introduction to the three forms of crystalline carbon, go to this URL: http://www. youtube. com/watch?v=GIHmfBsHsCY . Q: Different forms of the same element are called what? A:
OPTIONS:
- subclasses
- amines
- polymorphs
- allotropes

Answer: allotropes

Question: Answer the following question given this paragraph: Plant cells have structures that animal cells lack. What important process takes place in plant cells but not in animal cells that might explain their differences?. Q: Plant cells have structures that animal cells? A:
OPTIONS:
- have
- drink
- eat
- lack
Answer: lack

input with options: Answer the following question given this paragraph: Q: Fruit begins to ripen because what gas is released? A:
OPTIONS:
- sulfur
- chloride
- hydrogen
- ethylene
output: ethylene

Q: Answer the following question given this paragraph: Q: In recent years, it has been hypothesized that molecules in the environment also act as? A:

OPTIONS:
- pathogens
- homeostasis disruptors
- catalysts
- endocrine disruptors

A: endocrine disruptors

input: OPTIONS:
- by creating proteins
- by creating water
- by creating heat
- by creating acids Now, answer this question: Answer the following question given this paragraph: Carbon dioxide chemically weathers rock by creating acids. Q: How does carbon dioxide chemically weather rocks? A:
A:
output: by creating acids

Question: Answer the following question given this paragraph: Look at the rock layers pictured below ( Figure below ); they show a feature called Hutton's unconformity. The unconformity was discovered by James Hutton in the 1700s. Hutton saw that the lower rock layers are very old. The upper layers are much younger. There are no layers in between the ancient and recent layers. Hutton thought that the intermediate rock layers eroded away before the more recent rock layers were deposited. Q: As per hutton's unconformity, what happened to the intermediate layers of rock? A:
OPTIONS:
- they metamorphized
- they fused
- they expanded
- they eroded away
Answer:
they eroded away