What goes up and down the stai...
[2338] What goes up and down the stai... - What goes up and down the stairs without moving? - #brainteasers #riddles - Correct Answers: 41 - The first user who solved this task is Djordje Timotijevic
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What goes up and down the stai...

What goes up and down the stairs without moving?
Correct answers: 41
The first user who solved this task is Djordje Timotijevic.
#brainteasers #riddles
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Would you like me to be your friend?

Kathy began a job as an elementary school counselor and she was eager to help.

One day, during recess, Kathy noticed a young girl standing by herself on one side of the playing field while the rest of the kids were playing a game of soccer.

A while later, Kathy walked over to the young girl and offered, "Would you like me to be your friend?"

The girl looked at Kathy suspiciously, then said hesitantly, "Okay, I guess so..."

"Why are you standing here all alone?" asked Kathy.

"Because," the little girl said with great exasperation, "I'm the goalie!"

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Oskar Hertwig

Died 25 Oct 1922 at age 73 (born 21 Apr 1849). Oskar (Wilhelm August) Hertwig was a German embryologist and cytologist who did extensive work on the nuclear transmission of heredity. He was the first to recognize that the essential event in fertilization is the fusion of the nuclei of the sperm and ovum. In 1875, he observed all the steps in fertilization, including the union of egg and sperm chromosomes in sea urchins. These animals are particularly suitable for microscopic studies because of their transparency. He saw there was a single nucleus before fertilization and two nuclei immediately afterwards. He realized the second nucleus had come from the spermatazoon, and thus a single spermatazoon can fertilize an egg. He also investigated malformations of vertebrate embryos.
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