Across
- 2. what provides food,shelter and minerals to the alga?
- 4. _________ are small openings or pores usually at the under side of the leaves
- 5. _________is obtained from the sun.
Down
- 1. what absorb nutrients from the soil?
- 2. __________ add fertilizers to the soil to increase the nutrients in the soil.
- 3. what is taken from the air to perform photosynthesis?