b is the right answer I think
if you or anyone you know is good at math then please go to my profile and check out my question that I need answered
Answer:
Serpentine minerals are made of tiny sheets of silica tetrahedrons that are loosely held together.
Loss of habitat from human civilizations
The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide.
Hope this help
Respiration is a process of exchanging gas.
