Aperson with blood group a produces antibodies against b. a person with blood group b produces antibodies against a. a person with blood group ab produces no antibodies. how can you explain this?

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.