Crossword Puzzle Nature B2Online version This is our B2 Nature Crossword set at an upper intermediate level by Created by ESLeschool 1 careful management of the environment and natural resources 2 not covered with forest 3 a group of individuals that belong to the same species, live in the same area, and breed with each other 4 when the last members of a species die, the species becomes extinct 5 contamination of the natural environment 6 remove the trees from 7 organisms that ingest organic matter that is living or recently killed 8 organisms having some common qualities; kind or type 9 the type of environment in which an organism normally lives 10 the plants of a given region 11 a colorless gas that is a screen for ultraviolet radiation 8 6 11 10 2 9 1 5 7