What are 3 things that can't be seen but can be touched?

Three things you can’t touch, but you can see: Radio waves, atoms and oxygen.

Explanation: The above items CAN’T be touched, but they can be seen with the naked eye.

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)