How does the giant sequoia grow to be the heaviest tree in the world? Why doesthe bristlecone pine live for 4770 years? How does the venus flytrap catch itsfood... » 

How does the giant sequoia grow to be the heaviest tree in the world? Why doesthe bristlecone pine live for 4770 years? How does the venus flytrap catch itsfood? North America features soaring mountains scorching deserts grasslandsand thick forests. Find out how North Americas most incredible plants maketheir home here. «