Three Major Characteristics of the Inner Planets. The four inner planets -- Mercury, Venus, Earth and Mars -- share several features in common. Astronomers call them the “terrestrial planets” because they have solid, rocky surfaces roughly similar to desert and mountainous areas on the earth
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Secondary Succession-- Is a process started by an event. (Forest Fire, Harvesting, Hurricane.. etc.) that reduces and already established ecosystem.
I would say that the answer is
A.) The stages start with a Forest Fire.
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#1. The maintenance of an organism's internal environment within certain limits
#2, im not sure i completely understand the answer choices..
