What is Primary Succession and Secondary succession​

How will technology impact medicine in the future?

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Which of the following can occur to two segments of a population if they are geographically isolated 1.) they can only share some types of genes 2.)both groups most likely become extinct 3.)they find a way to come back together 4.)eventually they become separate species