Answer: Interventional Study
Explanation: When a treatment group is compared to standard (control) group it is called Interventional Study
<span>Geographically isolated populations may live under different environmental conditions, which can lead to each of these separated populations adapting differently to these different conditions. Given enough time, these little changes can lead to those populations diverging into distinct species after so many successive generations. </span>
Nitrogen fixation is a process that changes nitrogen within plants and soil into"nitrogen compounds"