When a population of organisms has the conditions to increase, mainly lack of predators and surplus food resources, it increases exponentially. That rapid increase in the population doesn't lats for very long though. The reason why it can continue to grow as much as that the food resources are limited, so when the optimal number of organisms is on the scene in accordance to the available food sources, any further increase results in inner species competition for food. That will cause a significant decrease in the increase of the population, or even totally stop. The appearance of predators is also a factor, as the predators will increase in numbers in accordance to the amount of prey animals, so once they reach their optimal numbers then they will be able to control the population and its increase or decrease.
Like earth, venus does not have any major faults or folds or rift valleys ridges on its surface thus it does not have any global tectonic or plates of rock in rotation.
Being a terrestrial planet, the seismic data collected from the moment of inertia and possible due to the planet plates are too rigid to move but the phases of volcanoes have been found in the craters in addition mountains, and valleys are commonly found on rocky lands points out to some degree of tectonics present under the planet.
Also, the size and structure of the plan tell about its core, mantle and crustal zones. Also, venus is supported to have a magnetic field not as strong as the earth which is induced by the ionosphere and Solar Winds.
