⊂ Communicable diesase.. ⊃
Hope it helps! ~ Tsyu
The respiratory system works to get essential materials to the cells when we breathe it takes the carbon dioxide from the alveoli ( air pockets in our lungs) and replacing it with oxygen. The circulatory system takes consists of veins which carries oxygenated blood from the entire body to the heart, and arteries which takes deoxygenated blood away from the heart to the lungs. Finally the digestive system works to get essential materials to the cells when we eat the vitamins, minerals and nutrients not only go to certain organs but also through the blood and the cycle starts all over again.
Bacteria is a single-celled organism
hope this helps
<span>Genes are the main cause of a Carabelli Cusp.
This is a condition where there is an additional cusp on the first molar of the
tooth and become less pronounce when progressing to the second and third
molars. In some cases, the cusps' forms included pits, ridges, and furrows. <span>
<span>The Carabelli
Cusp is a condition most common in Europeans and rarest in the Pacific Islands.
It is an inherited feature from a homozygote or a heterozygote gene that can be
present or absent in some
individuals. It was
discovered in the year 1842 by Georg Carabelli, a court dentist of the Austrian
Emperor Franz. </span></span></span>
