Yes. Penguins do have knees.
A penguin's leg is composed of a short femur, knees, tibia, and fibula.
It may seem that penguin's don't have knees when they waddle. This is because the upper leg bones of penguins are covered by its feathers, making it appear as though they have very short legs.
Spontaneous miscarriage in the first trimester is related to Chromosomal defects in the fetus. An estimated 15 to 20 percent of known pregnancies end in miscarriage, the loss of a pregnancy before the 20th week. Upto 70 percent of first-trimester miscarriages, and 20 percent of second-trimester miscarriages, are caused by chromosomal anomalies/abnormalities in the fertilized egg. Most often, it means that the egg or sperm had wrong number of chromosomes, and consequently the fertilized egg can't develop normally.
The answer is 22 hydrogen atoms.
This is a simple sugar compound formula <span>Cn(H2O)n</span>
If you have 11 oxygens that means that the second n in the formula will be 11.
Notice that the H (hydrogen) is followed by a 2, that means that the 11 put outside the parenteses will be multiplied by 2.
11 x 2 = 22 hydrogen atoms
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The most important trait that modern fish had developed was the transformation of their skeleton from cartilage to bones. This was called ossification. Eventually, bony fishes and sharks dominated the waters because their body structure development which helped them as swimmers is advanced compared to earlier fishes.
