Geography

2. The crowns of trees that are able to grow to 30 metres or more
4. Very little sunlight is able to reach this layer
5. Use of water for water sports
7. The place where a river flows into another water body
9. the ocean that is below the Indian Subcontinent
13. The largest water store in the world
14. Refers to the community of plants and animals found in rivers that interact with one another
15. Name of the river in Egypt
17. When harmful substance enter water bodies and cause water quality to fall

1. The largest use of water worldwide and used to grow crops and rear animals for human consumption
3. The glacier that is located in Europe
6. They do not shed all of their leaves at particular times of the year
8. Use of water to cool down equipment in factories and power plants and to generate electricity in dams
10. The largest continent in the world
11. Use of water that is for household activities
12. The start of where a river begins
16. Trees that grow very close to one another, their crowns interlock to form thick and continuous mass of branches and leaves