Across
- 4. Overcrowding in urban areas or streets
- 5. Overcrowded urban areas with poor living conditions
- 6. Type of energy that can be replenished naturally
- 7. Cutting down forests for farming or construction
- 8. Severe scarcity of food
- 9. Limited availability of essential resources
Down
- 1. Family ______ helps reduce population growth
- 2. Harmful substances introduced into the environment
- 3. The total number of people in an area
- 7. Overuse of Earth's natural resources