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in the year 1907 plastic was invented
The nursing usually takes up to 18 months, i.e. one year and a half.
The baby dolphin may however remain with his mum for up to 3-6 years.
Answer:
A mechanical computer
Explanation:
Created from gears and levers
Answer:
A. Multi-field attributes
B. A ternary relationship
C. A unary relationship
