Ecology

Clues in this puzzle

Across

• The color most associated with environmental movements (5)
• To process used materials like glass or paper so they can be used again (7)
• The layer in the upper atmosphere that protects Earth from harmful rays (5)

Down

• A natural stream of water that flows into the sea (5)
• A very dry habitat with little water and sandy soil (6)
• The vast body of salt water that covers most of the globe (5)

More Ecology crosswords

• Ecology Medium · 12 words
• Ecology Hard · 18 words
• Ecology Easy · 10 words

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