Population Density: This is the number of individuals per unit area or volume. It's like counting how many people are in each room at the party.
Population Growth Rate: This is the rate at which a population increases in size if there are no density-dependent forces regulating the population. It's like tracking how quickly guests arrive at your party.
Limiting Factors: These are environmental conditions that limit the growth, abundance, or distribution of an organism or a population within an ecosystem. They're like rules set by the host (like only 50 guests allowed) that control how big the party can get.