I am sorry I can only answer 7 for you.
Hope it helps
7= By replacing the neurons lost from a injury with new cells.
C) <em>The frequency of heterozygotes is given by (p + q)/N, where N is the number of individuals in the population.</em>
Answer: respiratory system
Explanation:
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
most are formed when a plant or animal dies in a watery environment and is buried in mud and silt.