Answer:
Often more effective at preventing flooding than Soft Engineering options.
Dams and reservoirs provide oportunity for Hydroelectric power.
Job opotunities (e.g in builing artifical levees/dams)
Building flood banks is relatively cheap.
Explanation:
Necklaces of seashells, lions teeth and bear claws. Also sculptures of animals.
The primary source gives the direct information from the research. Secondary source gives the second hand information.
Explanation:
The primary literature is used to review articles and books, whereas secondary literature has no abstract and data images are taken from other sources.
Scrapbooks, journals, letters, archives, speeches, published books, government publications are some examples of primary source.
Bibliographies, biograhical works, reference books, articles from magazines, journals are examples of secondary source.