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Greg
, OH | GREAT JOB
I watched "dragonflytv" on my PBS station this
morning in Cleveland, Ohio on "Ecosystems". I Thought
it was very interesting when the two young girl scientists measured
the amount of moisture in the different sand dunes: fore dunes had
the most, next was scrub and third was the active ones, with no
moisture at all. GREAT JOB, Victoria and Alajandra! And Michael
and Marko are great hosts. Sincerely, a fan of the show, Greg from
Akron/ Copley Ohio. Our great young people can learn and do a lot
of interesting things. Good show!
April, 11, CA | Sand Dunes
Are sand dunes all the same?
April,
11, CA | Sand Dunes...reply
My guess is that all sand dunes are different in at least on way,
since wind shapes and forms them all the time. However, there are
five basic types of sand dunes. You can go here for some pictures
of them: http://pubs.usgs.gov/gip/deserts/dunes/
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