Given that all bodies in the solar system should have suffered equally from collisions during the period of early bombardment, if we find a body with relatively few craters on its surface we deduce that
A) the surface of the body is made of material that produces fewer impact craters
B) the body must have been located in a region of the solar system that for some reason suffered fewer collisions
C) the body must have formed after the period of early bombardment
D) geological activity or other processes must have removed older craters resulting in a younger, smoother surface
Question 2
A common way a robotic spacecraft can be accelerated and have its trajectory changed without the use of any fuel is via
A) a gravitational slingshot from another spacecraft
B) radiation pressure from the Sun
C) the ejection of mass from the probe
D) a gravitational slingshot from another planet
Tooth Numbering System
Solar Granulation
Overview of the nervous system.
The cardiac conduction system.
Neurotransmitters of the Autonomic Nervous System (2 of 2)
The Vascular System