Well for cellular respiration the inputs, or reactants, are glucose and oxygen. The outputs, or products, of cellular respiration are water, carbon dioxide and ATP molecules - ( adenosine triphosphate ). Photosynthesis is different, as expected, from cellular respiration. In photosynthesis the inputs are : 6H2O( water ), 6CO2( carbon dioxide ), ( light energy ).

and the outputs or the products of photosynthesis is C6H12O6 (glucose), 6O2 ( oxygen ).

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

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. to discover aspects of the natural world.

hopefully i .