laws in private and public land

1. Enumerate the Properties of Public Dominion for Public Use. 2. Enumerate the Properties of Public Dominion for Public Service. 3. Enumerate the Properties of Public Dominion for the Development of National Wealth. 4. In Paragraph 1 of Art. 420, what does it means " and others of similar character." Give examples. 5. CASES; FACTS: A fishery was constructed on a river. For many years, the constructor of the fishery remained in its possession. ISSUE: whether or not the constructor has acquired ownership over said river? STATE YOUR DECISION