Q: What term means an area where two closely related species continue to interact and reproduce? A:
OPTIONS:
- homozone
- heterozone
- common zone
- hybrid zone

Answer: hybrid zone

Question: Q: What is the name for spherical groups of old stars held tightly together by gravity? A:
OPTIONS:
- nebula
- elliptical clusters
- dark matter
- globular clusters
Answer: globular clusters

input with options: Q: What kind of muscle relationship generally produces back-and-forth movement of a body part? A:
OPTIONS:
- complementary muscles
- cooperative muscles
- synchronized muscles
- antagonistic muscles
output: antagonistic muscles

Q: Q: What type of radiation from the sun reaches earth across space striking everything on earth's surface? A:

OPTIONS:
- particle
- static
- seismic
- electromagnetic

A: electromagnetic

input: OPTIONS:
- carbon
- short filaments
- short particles
- short microtubules Now, answer this question: Q: What are centrioles made from? A:
A:
output: short microtubules

Question: Q: The quarks in a particle are confined, meaning individual quarks cannot be what? A:
OPTIONS:
- separated
- changed
- hypothesized
- directly observed
Answer:
directly observed