Answer:
because they can donate blood to anyone
Explanation:
Channel proteins is the answer to your question
Answer:
What is a Global Climate Model? A global climate model (GCM) is a complex mathematical representation of the major climate system components (atmosphere, land surface, ocean, and sea ice), and their interactions. Earth's energy balance between the four components is the key to long-term climate prediction.
Explanation: do you want a model?
B.AIDS because it disables your immune system.