Coral reefs are formed by _____ volcanic rocksmarine sedimentschlorine material precipitated from sea water tiny colonial marine animals which construct limestone skeleton material
Which of the folowing is a rift valley The Amazon valleyThe Thames valley The Rhine valleyThe Mississipipi valley
During Pleistocene epoch, four glacial phases were identified. Which one of the following is the correct chronological order in which they appeared during this epoch from early times? Gunz-Mindel-Wurm-Riss Gunz-Mindel-Riss-WurmWurm-Riss-Mindel-GunzMindel-Gunz-Riss-Wurm
The fog that commonly occurs along the sea-coasts is of the ______ type radiation advectionfrontalconvection
The difference between the diameter of the Earth at the poles and at equator is 27 miles36 miles48 miles57 miles