What characteristics are used to distinguish between the organisms in different kingdoms

Explanation:

The six Kingdoms are: Archaebacteria, Eubacteria, Fungi, Protista, Plants and Animals. -Organisms are placed into these categories based on similarities or common characteristics. Some of the characteristics that are used to determine placement are cell type, nutrient acquisition, and reproduction.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.