While Earth is estimated to be 4.6 billion years old, the oldest oceanic crust is approximately ________ years old
A) 1 billion B) 6,000 C) 2.5 billion D) 865 million E) 200 million
E
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Oxbow lakes occur along rivers in mountainous areas due to the formation of temporary base levels. Indicate whether the statement is true or false
Which reptile group is considered to be the immediate ancestor of mammals?
a. captorhinomorphs d. therapsids b. pelycosaurs e. coelacanths c. labyrinthodonts
Most of the easily recoverable uranium in the United States is found in sandstone in New Mexico, Utah, and Colorado.
Answer the following statement true (T) or false (F)
The river dolphin hotspots being protected in Bangladesh are areas that
A) will protect dolphins from hunters. B) will provide food resources and breeding sites. C) no longer support river dolphin populations. D) are designed to allow heavy human fishing activities, as well as being dolphin refuges.