In the accompanying figure of a Microsoft Word 2016 document, which of the following is Box 1 pointing to ? 
Definitions:
Population Size
The sum of people located in a specified region at a given time.
Nutrient Supply
The provision of essential dietary components necessary for organisms to grow, reproduce, and maintain their health.
Population Size
The total number of individuals within a defined area at a given time, a critical factor in understanding the dynamics and health of species or communities.
Nonmigratory Birds
Birds that do not undertake long-distance movements seasonally but rather stay in the same geographical region year-round.
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