Transcript New Species develop from earlier species

By: Jonathan Wei, Sterling Esparza,
Jade Coniglio, and Kristin Keodara
• Charles Darwin published his ideas into
a book about evolution and natural
selection in 1859
(On the Origin of Species)
•Studies of Galapagos
finches led to:
- insight on how species
arise
- Important observations
on isolation and environmental factors
What is Speciation?
 Speciation is the evolution of a new
species from an existing species
Natural Barriers
Some barriers that could cause isolation
and affect speciation:
•Mountains
•Deserts
•Bodies of water
•Rock
Example of isolation and speciation by
geographic barriers:
Lake Tanganyika