Problem: OPTIONS:
- strip mine
- fracking
- gold mine
- open-pit mine
Q: Q: A quarry, which produces rocks and minerals used to make buildings and roads, is an example of what type of mine? A:
Answer: open-pit mine

Problem:OPTIONS:
- frictional forces
- tension forces
- hydrodynamic forces
- centripetal forces

Q: Forces which cause objects to turn around continuously in a circle are known as? A:
****
A: centripetal forces

Q: What compound gives tarnished copper it's green color? A:
OPTIONS:
- bronze
- zinc
- brass
- copper carbonate
copper carbonate

Q: What is produced when sulfur and oxygen combine? A:
OPTIONS:
- Acidic oxides
- hydrogen oxide
- Basic Oxides
- sulfur oxide

Answer: sulfur oxide

Question: Q: Blood helps maintain homeostasis by stabilizing ph, temperature, osmotic pressure, and by eliminating this? A:
OPTIONS:
- toxins
- acid
- water
- excess heat
Answer: excess heat

input: OPTIONS:
- circular
- rectangular
- diamond
- heart-shaped Now, answer this question: Q: What shape is the gametophyte in ferns? A:
A:
output:
heart-shaped