*Question*
Q: Mammals have four limbs and produce what kind of eggs? Choices: - placental - umbilical - hard-shelled - amniotic A:
**Answer**
amniotic

*Question*
Q: What is the term for the decayed remains of living organisms? Choices: - waste - necrosis - intermediate material - humus A:
**Answer**
humus

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

*Question*
Q: What are the rolling motions during an earthquake called? Choices: - tidal waves - seismic thrusts - velocity waves - surface waves A:
**Answer**
surface waves