Nutrition in plants

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Across
  1. 3. who add fertilizers to the soil to increase the nutrients in soil
  2. 4. ________ is obtained from the sun
  3. 5. What lives in the root nodules of legumes and does nitrogen fixation
Down
  1. 1. What provides shelter,water and minerals to the alga?
  2. 2. what is taken from the air through small pores in the leaves called stomata
  3. 4. ________ are small openings at the under surface of the.