D. fingernails
Skin, hair, and vertebrae are all the outer layer of the body and protect the body. The fingernails aren't part of that.
Butterflies belong to the phylum Arthropoda.
Answer:
Pollen grains land on the stigma and move down the pollen tube into the ovary.
Answer:
I think it is A. Antibodies
Please tell me if I am wrong
Plants use photosynthesis