1 Antibiotics have specific targets to effectively fight a​

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism

Is there any solid scientific evidence that humans have been cloned?

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