1. What was the estimated cost of smog to Toronto's economy in the year 2000?

	A. Approximately $2.4 billion
	B. Approximately $2.4 million
	C. Approximately $24,000
	D. Approximately $2,400

2. How much did air pollution cost Ontario's economy in the year 2000?

	A. Approximately $10 trillion
	B. Approximately $10 billion
	C. Approximately $10 million
	D. Approximately $1 million