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.
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Check
Across:
1.
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level
3.
an organism that feeds on plants or other animals for energy
5.
colorless, odorless reactive gas comprised of three oxygen atoms.
Down:
2.
A series of organisms through which food energy flows in an ecosystem
4.
the natural interconnection of food chains and a graphical representation (usually an image) of what-eats-what in an ecological community.
OK