Describe prokaryotic cells and discuss the role they played in the early Earth. What will be an ideal response?
A prokaryotic cell lacks a nucleus and organelles such as mitochondria and plastids. Bacteria
and archaea are examples of prokaryotic cells. The early photosynthetic organisms, including
cyanobacteria, were prokaryotic. They played an important role in the change in the atmosphere
from oxygen-poor to oxygen-rich. Mound-like stromatolites are the result of capture of
sedimentary particles by the filaments of these prokaryotic bacteria.
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Colonel Muammar al Qadhafi is the leader of
A. Algeria B. Libya C. Morocco D. Tunisia
The dry slot is associated with the ____________________ ____________________ belt
Fill in the blank(s) with correct word
What is the right ascension and declination for Polaris, the North Star?
A) RA indeterminate, D 90 degrees B) RA 90 hr, D -90 degrees C) RA 0 hr, D 80 degrees D) RA 0 hr, D 0 degrees
How many years of stress were relieved by the 1906 earthquake, if the speed of movement has been 5.6 cm/yr?
The 1906 San Francisco earthquake resulted in a maximum 8.5 m (28 ft) of movement along the San Andreas Fault around Point Reyes. What will be an ideal response?