What components go into photosynthesis? what components come out?

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?

How dose plate tectonics effect climate

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