Discuss the sources of biogenous sediments
What will be an ideal response?
Biogenous sediments are composed of the remains of live organisms. There are two types of biogenous sediments: calcareous and siliceous oozes. Calcareous deposits are most common in shallow, warm water. Organisms such as corals, mollusks, coccolithophorids, and foraminiferans contribute to the development of calcareous oozes, small calcium carbonate particles on the ocean floor. Siliceous oozes are associated with cooler waters and the remains of organisms with silica in their cell walls or tests such as diatoms and radiolarians.
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How do chemicals get into and pollute ground water? Give some examples
What will be an ideal response?
What nation has over 700,000 displaced persons—including many in refugee camps in Thailand?
A) Singapore B) Laos C) Burma D) Cambodia E) Indonesia
Steep uniform slopes generally produce which drainage pattern?
A) radial B) parallel C) annular D) dendritic E) deranged