Q: What body system allows humans to move? Choices: - digestive system - abnormal system - lung system - muscular system A:
muscular system

Q: What kind of fibers are used to transport telephone and television signals? Choices: - touch fibers - process fibers - hair fibers - optical fibers A:
optical fibers

Q: Q: In angiosperms, flowers and fruits are adaptations essential for what process? Choices: - variation - death - photosynthesis - reproduction A:
A: reproduction

Question: Q: Protists are the simplest of what? Choices: - prokaryotes - plants - fungi - eukaryotes A:
Answer: eukaryotes

*Question*
Q: What model of the atom features an electron orbiting a nucleus, forming a closed-current loop and producing a magnetic field with a north pole and a south pole?. Choices: - hydrogen model - solar model - gravitational model - planetary model A:
**Answer**
planetary model

Q: Q: What do you call reversible changes that do not change matter's chemical makeup or chemical properties? Choices: - potential changes - element changes - chemical changes - physical changes A:
A: physical changes