Environment Day

4. A Latin word for the plants of a particular habitat or region.
9. The layer of the atmosphere composed of the crust.
10. The sourcebook that records endangered species of plants, animals and other species existing within the territory of the state or country.
11. The ecosystem formed by biotic and abiotic factors of nature.
13. The scientific study of the physiology, genetics, ecology and classification of plants.

1. The ______ effect is responsible for the addition of chlorofluorocarbons in the atmosphere global warming.
2. 1 tonne of paper is equivalent to _______fully grown trees.
3. Amount of oxygen present in the atmosphere.
5. disturbances in the magnetosphere caused by solar wind seen as northern lights in high altitude regions.
6. _______ was formed when uprooted trees were unable to decompose and the carbon in them was preserved for thousands of years.
7. An animal or plant species native to a particular place.
8. The fifth mass extinction resulting in the end of dinosaurs occurred due to a probable asteroid strike in the country of ______.
12. The country that is the global host of world environment day 2021.