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A biologist is repeating the Hans Spemann experiment in which he observed the formation of a grey crescent which has formed after fertilization.Based on this information you would conclude that he or she is studying which of the following organisms?
Oil Sand
is a type of unconventional petroleum deposit, consisting of sand or sandstone impregnated with bitumen, a dense and extremely viscous form of petroleum.
Bitumen
A sticky, black, highly viscous liquid or semi-solid form of petroleum, used primarily in road construction and waterproofing.
Coal Formation
The process by which dead plant material over millions of years is transformed under heat and pressure into coal.
Heat Content
The total amount of heat energy contained in a substance or system.
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