【明報專訊】DOWN 1. Many algae contain chloroplast (葉綠體) and are able to perform photosynthesis (光合作用), thus new biofuel projects aim to make solar _ _ _ _ _ _ _ _ _ (電池) with them. 2. Since algae are light-sensitive, scientists try to cure _ _ _ _ _ _ _ _ _ by substituting damaged cells in the eye with those containing algae genes, which help patients detect light and may allow them to see again. ACROSS 3. Algae can take up _ _ _ _ _ _ _ _ _ _ (污染物) in air and water, so they are added to wastewater for clean treatments. 4. Seaweeds such as sea grapes (海葡萄) and kombu (昆布) are edible algae. They are greatly consumed in countries by the sea like Japan and South _ _ _ _ _ (韓國). [Smarties' Power English 第207期]
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