Climate change

4. fresh invigorating air, especially that blowing on to the shore from the sea
7. The state of the atmosphere at a particular time and place
9. the process of turning from liquid into vapour
11. the process of replanting an area with trees
12. the variety of plant and animal life in the world or in a particular habitat, a high level of which is usually considered to be important and desirable
13. the dying out or extermination of a species
16. organic matter used as a fuel, especially in a power station for the generation of electricity
18. a large community of living organisms (plants, animals and microbes) in a particular area
19. when populations of people grow, the population of a place may spill over from city to nearby areas

1. a fuel derived immediately from living matter
2. relating to or determined by the sun
3. a large natural or artificial lake used as a source of water supply
5. is the process of planting trees, or sowing seeds, in a barren land devoid of any trees to create a forest
6. the action of reducing the severity, seriousness, or painfulness of something
8. the action of clearing a wide area of trees
10. the action of abating or being abated; ending or subsiding
14. the production and discharge of something, especially gas or radiation
15. a glass building in which plants that need protection from cold weather are grown
17. the process of change by which an organism or species becomes better suited to its environment