What is called the "building block" of
life?
)))
atom
organism

List five ways we are indebted to phytoplankton

If a grape were placed in a hypertonic solution what would happen and why?

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