Organ systems. Organs are grouped into organ systems, in which they work together to carry out a particular function for the organism. For example, the heart and the blood vessels make up the cardiovascular system
Hierarchical scale is the use of scale to indicate relative importance. In the royal altar to the hand, the king is at the center because he is the most important followed by his attendants.
D. Dreamtime
Aboriginals believed that spirits gifted them everything in life. They believe that their creators continue to live on in the stars. Aboriginal art can be dated back in Australia about 65,000 years ago.
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