Problem:OPTIONS:
- pathogenic
- parasitic
- predatory
- mutualistic

Q: Some sea anemones establish what kind of relationship with hermit crabs by attaching to the crab's shell? A:
****
A: mutualistic

Q: What is a person who studies the frequency and distribution of disease within human populations and environments called? A:
OPTIONS:
- biologist
- entymologist
- anthropologist
- epidemiologist
epidemiologist

Q: What muscle is found only in the walls of the heart? A:
OPTIONS:
- respiratory muscle
- abdominal muscle
- skeletal muscle
- cardiac muscle

Answer: cardiac muscle

Question: Q: What is the term for a change in an object's motion, which occurs whenever an object is acted upon by an unbalanced force? A:
OPTIONS:
- rotation
- compression
- inclination
- acceleration
Answer: acceleration

input with options: Q: An organism's unique role in the ecosystem is called its what? A:
OPTIONS:
- focus
- adaptation
- purpose
- niche
output: niche

Problem: OPTIONS:
- sound energy
- mechanical energy
- solar energy
- electromagnetic energy
Q: Q: What type of energy travels through space as electrical and magnetic waves? A:
Answer:
electromagnetic energy