The 4 organizations of living things from MOST complex to LEAST complex are A) Cells -> Tissues -> Organism -> Organ System
B) Cells -> Tissues -> Organs -> Organ System
C)Organ System -> Organism ->Tissue -> Cell
D)Organ System -> Organ -> Tissue -> Cell

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)

b a mature ovary of a plant.