You may want to try adding fertilizer
Answer:
Population.
Explanation:
Population may be defined as the smallest unit of ecology and the evolution might occur at the population level.
Population is the group of the organisms that belong to the particular species and lives in a specific particular habitat. The individual of the population breeds among themselves. Sometimes the individual of two different population can also breed among themselves in extreme cases.
Thus, the answer is population.
Water?? I’m not sure though
The forces beneath the earths crust that makes volcano's erupt is Magma and the rocks around it, which both make its way up to a volcano by going through the cracks of the Earth's crust, when making their way up they release pressure that causes a volcano to erupt.
