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

Q: Q: Chemical reactions follow the laws of what? Choices: - Newton - quantum physics - photosynthesis - thermodynamics A:
A: thermodynamics

Q: Q: A major diversification of what animal group occurred about 50 million years ago, possibly spurred by worldwide climate change? Choices: - reptiles - amphibians - insects - mammals A:
A: mammals

Q: Q: What substance are physical objects are made of? Choices: - gravity - energy - friction - matter A:
A: matter