Answer:
21. Which type of waste has the lowest recovery ratio?
Social Studies
The table shows the approximate populations of three countries.
Country Population
China: 1.3 × 10^9
France:6.48 × 10^7
Australia: 2.15 x 10^7
22. How many more people live in France than in Australia
23. The area of Australia is 2.95 x 106 square miles. What is the approximate average number of people per square mile in Australia?
Explanation:
Using subtraction and division operations, people live more in France than in Australia and approximately 7.29 people live per square mile of an area in Australia.
Number of people who live in France than in Australia :
Population in France - Population in Australia
The number of people per square mile in Australia can be calculated thus :
Number of people per square mile = Population ÷ Land Area
Therefore, the Number of people who live per square mile in Australia is 7.29 people
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