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Two arctic fox are fighting with a polar bear for a sea lion carcass. One fox distracts the bear while the other eats. What type of limiting factor is the polar bear?

• Predator-Prey Relationships

• Competition

• Herbivory Effect

• Weather

A group of elephants gets stuck in mud at the edge of the river from a recent mud slide. A lion waits for an elephant to get tired before it attacks. What is the limiting factor to the elephant population?

• Predator-Prey Relationships

• Natural Disaster

• Herbivory Effect

• Competition

A duck population is breeding at exponential rates. The snakes that hunted them have been collected by fur collectors. They make boots from python snake skin. What is the limiting factor to the snakes?

• Ducks

• Predator-Prey

• Exponential Growth

• Humans

A duck population normally begin migrating south right after the last rain of the late summer season. Suddenly, they’re migrating much earlier. The climate has been changing far too often which is altering the effects of their magnetite.

• Predator-Prey Relationships

• Weather

• Herbivory Effect

• Competition