Most trees that fruit heavily one year will take a rest the following year and produce little fruit
I've heared eating acorns causes kidney damage.
The storms that produce tornadoes often produce hail as well. The presence of hail causes light to be refracted in an unusual way.
sickle-cell disease
After observing squirrels in my yard, I asked myself, Why do they bury acorns when there are thousands laying on the ground. The answer is actually very ingenious. Burying the acorns subjects them to moisture which in turn causes them split open and sprout, the squirels don't have to remember where they buried them. They just look for the tiny seedlings emerging and know that underneath is a yummy, nutritious snack and mother nature has already cracked the shell open for them. I have verifiied this through observation. Again, quite ingenious, because any acorns that are missed become new oak trees, insuring the propagation of more trees.
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Oak trees are composed of two main species types White and red with many sub species falling under both groups Of both main species types neither will quit producing acorns after maturity. However they will skip years depending on soil moisture and climatic shifts in climate and weather patterns. Stress caused by these factors may cause some species to not produce in certain years but this is typical. Red oaks are more prone to drought stress as they tend to have a shallower root depth and lack the long tap root that most white oaks have. Stress from drought and a late frost which hits after a tree has budded and began its pollination process is the leading causes of crop failures. Repeated stress on an old mature tree as well as limbs falling off due to heavy foliage can cause fungi to set in which will ultimately lead to disease and death of mature trees.
No. That is an unusual behavior in the majority of species. Even in Humans, where the size of the had causes problems, it is unusual.
it work on the piezo electric effect. when piezo electric ceramic is compressed, it produces voltage in terms of thousands. this voltage is causes an arc (spark) to produce.
My opinion i think it is Certain Foods
When acorns are big and plentiful, it is called a mast year for acorns. The reason for this is not fully understood. However, it is believed to be causes by certain favorable weather conditions.
The unusual birthday ritual in Fish Cheeks causes a vivid picture.
These are caused by the gall wasp, Andricus quercuscalicis which lays its eggs inside the acorn and causes it to mutate.