Q: Pure constructive interference and pure destructive interference are distinguished by whether or not identical waves are what? Choices: - before phase - in equilibrium - after phase - in phase A:
in phase

Q: What travels at a rate of 300,000 kilometers per second, or nearly instantaneously? Choices: - air - sound - gravity - light A:
light

Q: Q: When cardiac muscle contracts, the heart does what? Choices: - cardiac arrest - irregular heartbeat - heart murmur - pumps blood A:
A: pumps blood

Question: Q: What is typical weather for chicago in winter? Choices: - rain and wind - dry and windy - ice and humidity - cold & snow A:
Answer: cold & snow

*Question*
Q: For what kind of animal is communication essential? Choices: - anti-social animals - new born animals - migrating animals - social animals A:
**Answer**
social animals

Q: What kind of bees are most adult bees in a hive? Choices: - larvae - queens - drones - worker bees A:
worker bees