Answer to Question 1
False
Answer to Question 2
Deep-sea sediments hold about a 180-million-year history about the ocean, its chemistry, and its inhabitants. Paleoceanographers may ask questions about the history of the ocean and Earth. These questions may range from climate science, to species biology, to geological phenomena, and more. Scientists use many different sampling techniques such as clamshell samplers, piston corers, and deep-sea drilling to extract sediment samples from different depths. Paleoceanographers can infer several types of information held within these sediments including the age of the sediments, the identification of microfossils trapped in the layer of sediments, the historical temperatures of the ocean, and other aspects of past ocean chemistry and behavior. In addition, scientists are currently trying to interpret both oceanic and climate change history. New advances in instrumentation and technologies have enabled scientists to probe deeper into sediments unveiling more information about the ocean of the past.