B, hormones that serve as chemical messengers im not 100% sure though
I would go with c because its tells you right in there that the ecosystem help who lives around that area.
Use of transgenic animals to improve human health and animal production. ... The advance in the generation of pigs to be used as the source of organs for patients and in the preparation of pharmaceutical proteins from milk and other possible biological fluids from transgenic animals is described.
Answer:
B. Habitat destruction
Explanation:
What is the number one cause of biodiversity loss? 1. Habitat destruction. Habitat destruction is a major cause of biodiversity loss.
