There are multiple relationships present in every ecosystem such as predation, commensalism, parasitism, and mutualism because every organism depends on other organism for survival. Some organisms feeds on another organisms by killing it, this type of relationship is known as predation . In commensalism, one organism gets benefit while the other get neither benefit nor harm. In parasitism, one organisms get benefits while the other get harm whereas in mutualism, both the organism gets benefits.
The great rift valley was formed by violent subterranean forces that tore apart the earth's crust. These forces caused huge chunks of the crust to sink between parallel fault lines and force up molten rock in volcanic eruptions.