Make a list of social norms being practiced in your family and community
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conservation of public properties

respecting senior

love junior

helping person of societies in need.

participating in the religious functions of neighbors.

. ph changes the ability of them he enzyme to dissolve in water.

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.