Why is caffeine used as control solvent in daphnia experiment?

The addition of caffeine increased the heart beats per minute of the Daphnia in each trial. When the caffeine was added, their speed and movement remained the same. A paired T-test was conducted to compare the effect of 5%ethanol on the heart rate of Daphnia.

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)

not sure if this is what you'r looking for nnew= nold