Some advantages of blended learning, particularly at a Kindergarten to grade 12 level of education, can be found under the general concept of educational technology. It is also one of the most effective ways for Personalized learning at scale.
The length of a human pregnancy can vary naturally by as much as five weeks. Credit: Â© Jessmine / Fotolia. The length of a human pregnancy can vary naturally by as much as five weeks, according to research published online August 7 in the journal Human Reproduction. Normally, women are given a date for the likely delivery of their baby that is calculated as 280 days after the onset of their last menstrual period.
We can tell you that it was a long time, an extremely long time. So long in fact that it makes you question its authenticity. However, the longest human pregnancy was a documented event verified with laboratory tests. Most pregnancies last for about 9 months, 40 weeks, or 280 days in women.