ORh+ human being can donate his/her blood to: a-ARh+ patient. b-ORh- patient. c-ABRh- patient. d-BRh+ patient. e-a and d are correct. f-All of the above.

e-a and d are correct.

Explanation:

A person with O blood type is known as a universal donor but  when it comes to the rhesus factor the person can only donate to people who are rhesus positive.

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)