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