Fact 1: Having no natural predators increases population size. Fact 2: With an increase in population there is an increase in expenditures. Given the two facts above, what does having no natural predators increase?

Possible answers: 1). Animal survival; 2). in the frog family; 3). fur and fat; 4). scarce resources; 5). hyperthyroidism; 6). competition; 7). food and shelter; 8). expenditures;
The answer is:
8).