Which of the following best explains how resource availability influences the number of organisms that can live in an ecosystem? If enough resources are available, some populations will decrease but others will survive. If there are not enough resources available, all populations will increase until there are no resources left. If enough resources are available, some populations will increase but others will decrease. If there are not enough resources available, some populations will decrease. If there are enough resources available, then all populations will survive and the ecosystem will be in equilibrium.