Conservation is the protection of an organism or a group of organisms (like an endangered species or forests).
Biodiversity is the numerous amounts of species habitated in our earth. The more biodiversity, the better.
Conservation protects biodiveristy, thus, allowing more species to survive and thrive.
Histamines are chemicals released by the body as an allergic response.They help the body by reacting when their are "intruders" so when enters, histamine acts as a messenger and sends out a signal for the body to create a reaction helping to get rid of teh intruder through some type of reaction.
Answer:
I think it might be B
PLS TELL ME IF I'M WRONG!
Happy St. Patrick’s day too!