Q: Which activity is an example of a chemical change?
A: lighting a match
Q: How can you make liquid water become solid?
A: Put the water in a very cold place.
Q: A city wants to build a dam nearby to increase water supplies. Which question is most important to ask about the environmental effects of building the dam?
A: How will the dam affect fish populations?
Q: Using fossil fuels wisely and avoiding waste is an example of
A:
conservation.