En los animales, el sistema circulatorio no es complemento del respiratorio ya que el intercambio de gases se realiza independientemente del transporte de sustancias. ¿Qué características tiene el sistema circulatorio de los organismos que presentan esta particularidad?

What is the similarities and differences between bacteria and eukaryote?

During convection, less dense fluid rises and denser fluid sinks.

Color blindedness is a sex-linked trait. if we could see the pedigree chart for several more generations of the family illustrated here, we would expect a) more males to be color blind. eliminate b) more females to be color blind. c) no females to ever be color blind. d) an equal number of males and females that are color blind.