<span>the pelvic colon, rectum, and bladder
</span>
A frog's lungs don't work that well, but since it's skin is so thin, oxygen and carbon dioxide can pass trough it.
Bacteria can replicate themselves.
The value sign(x) equals −1, 0, or 1 depending upon whether the value x is negative, zero, or positive. Sometimes this is written as sgn(x) as is the case h
El signo de valor (x) es igual a -1, 0 o 1, dependiendo de si el valor x es negativo, cero o positivo. A veces esto se escribe como sgn (x) como es el caso h