Biologic evolution

The corbicula put out the water pipe from among sand when water in the water tank was
pulled out and it had left just as it is for one hour.

Because having put out the water pipe was lost of water, it is likely to have
become an oxygen deprivation.
However, when changing one's way of thinking
The plankton in water or the nutrient might possibly be taken.
It is because of not seeing putting out the water pipe when it thinks so why, there
is water.
How food is taken when water puts it is not understood.
Though it is thought that it is an oxygen deprivation..(.. ..laughter..)

A variety of thinking is happy.