Problem: OPTIONS:
- condensation
- solidification
- vaporization
- sublimation
Q: Q: What is the process in which a solid changes directly to a gas called? A:
Answer: sublimation

Problem:OPTIONS:
- weathering
- flooding
- wind erosion
- soil erosion

Q: Human actions such as plowing, logging, construction and other actions contribute to what kind of erosion? A:
****
A: soil erosion

Q: What are the most advanced group of seedless vascular plants called? A:
OPTIONS:
- shrubs
- conifers
- grasses
- ferns
ferns

Q: The hardest natural substance, diamond is a form of what element? A:
OPTIONS:
- zirconium
- zenon
- hydrogen
- carbon

Answer: carbon

Question: Q: What planet is closest to our sun? A:
OPTIONS:
- Earth
- Venus
- Pluto
- mercury
Answer: mercury

input: OPTIONS:
- a carbohydrate
- a fat
- a compound
- a protein Now, answer this question: Q: What is an organic compound made up of small molecules called amino acids called? A:
A:
output:
a protein