Basically:
Anaerobic: takes place in an environment without oxygen
Aerobic: takes place in an environment with oxygen
Hope this helps!
~Chrys
its the circulatory system
The small intestine is the longest part of alimentary canal with a length of 4.5 to 7 m and narrow in width, while the large intestine is the hinder-most part of the alimentary canal with a length of 1.5 m. it called the large intestine because it has a width of 4-6 cm. Also in the large intestine circular folds are absent while its present in the small intestine.
The expression of the alleles is independent of the organism's sex; both males and females express the allele.