3. What is the purpose of the oil on the oil immersion lens? Oil provides a medium for the bacteria to float on the slide
O oil prevents light distortion and makes the images clearer
Oil is a lubricant and allows the objectives to slide easily
O oil prevents any water from seeping into the cover slip

answer: c. two haploid cells

explanation:

1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)