Our Environment
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
1
2
3
4
5
Check
Across:
1.
man-made system of plants, animals, and people living in an area together with their surroundings
3.
The disposal of wastes by putting it in low-lying areas of ground and covering it with earth
4.
a community of living and non-living organisms, where each component interacts together as a unit through biological, physical and chemical processes.
5.
Substances which cannot be broken into pieces by biological process
Down:
2.
Burning of waste substances usually at high temperature of over 1000° C to convert them into ashes
OK