Nutrition in Plants

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Across
  1. 2. Hydroxide The substance that absorbs carbon dioxide
  2. 4. cells that control the opening and closing of stomata
  3. 5. The by-product of photosynthesis
  4. 8. The bacteria that can convert atmospheric nitrogen into nitrates
Down
  1. 1. tiny pores underside the leaves
  2. 3. the liquid used for testing starch
  3. 6. mutual benefit relationship among different organisms
  4. 7. White, green, or brow patches of thread like growth