I believe the most VALID answer to your question is "Homeostasis".
Organisms that carry out homeostasis do so in order to maintain a constant, optimum environment for the cells within their body.
Terrestrial or inner planets like Mars and Venus were formed near the Sun where the solar system's temperatures were very high.
1 It usually contains only one type of producer.
2 It usually contains a great diversity of species.
3 It contains simple food chains that have more consumers than producers.
<span>4 It contains complex food webs that have more heterotrophs than autotrophs.</span>
