Not just "Ludwig von" but any male duck
Research shows a mother eating a candy bar before doing this helps a baby fall asleep quicker
Partly frozen rain or rain mixed with snow
If our solar system fit into a cup, our galaxy would be the size of this 3rd largest continent
Trade name for plastic used as protective layer on "non-stick" kitchen utensils
An unlimited extent of space, time or quantity, as in numbers that go on "forever"
A short story by Franz Kafka, or the life story of a butterfly
1st called this in 19th c., branch of biology dealing with inter-relationship of organism & environment
Why a straw standing in a glass of water looks like it's broken at the water's surface
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