Consider a Tree

Watch a tree sometime.  A slight breeze will get its branches moving and the leaves fluttering around.

We know from our elementary science classes that all of the energy that goes into allowing a tree to grow comes from photosynthesis.  We learned the basic equation, where light plus water plus carbon dioxide makes sugar.  Maybe we even had to learn the Calvin cycle.

We learned about experiments by Joseph Priestly, Jan Ingen-Housz, Theodore Wihelm Englemann, Robert Emerson and William Arnold that showed what happened in photosynthesis.

We never considered that plants could use the energy of motion.  But are there any experiments that show that they can’t?

Is there enough energy in the wind to grow a tree?



About the roused bear

Nature photographer from central Iowa.
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