Answer:
B, producers make glucose and oxygen for consumers to use during cellular respiration.
Explanation:
Producers 'produce' for consumers; producers being plants and consumers being animals. Producers turn carbon dioxide into oxygen, so we know A and D are wrong. And producers don't require oxygen, only carbon dioxide, so we know C is wrong too.
Answer:
It's The amount of matter within the system remains the same and The cycle has a well-defined starting and stopping point.
Explanation:
What results? We don’t know what you’re talking about so we have nothing to base our answer on. Next time you could provide a picture of the results or what brought to the results. Sorry but this question is un-answerable.