I think the answer is liver and hepatic portal vein
Hope this helps
Covalent bond because a covalent bond is when it only shares electrons and it doesn't give or lose.
Answer:
D. Mutually beneficial: the bee receives pollen and the flower gets help with its reproduction
Explanation:
It is a mutually beneficial relationship because the flower provides the bee with nectar and pollen. Also, the bee provides the flower with a means to reproduce by spreading pollen from flower to flower through pollination.