21. Bonus Questions (2 pts. each):
21. What does homogeneous mean?
22. Stars, lightning, neon, and fluorescent light tubes are all examples of ________________.

24. 25. Climate and weather are different concepts, though they are related. How are the concepts of weather and climate different?
Weather refers to conditions nearer to the ground than climate.
Climate is related to the amount of sunlight; weather is not.
Weather conditions include precipitation, but climate does not.
Climate covers larger areas and longer times than weather.