Step 1 : Introduction to the question "1. Which of the following poses another major threat to the Amur leopard?"
...1. Fire ants 2. Smallpox 3. Wild fires 4. Tornados Wildfires set by humans pose a major problem for the Amur leopard. Fires have been started in the region for years in attempts to fertilize the ground and to kill insects such as ticks. Satellite images have shown that almost 1/4 of this area burns every year. Besides the threat from being burnt, these fires chase away the ungulates that make up a large portion of the Amur leopard's diet. It has also caused many forested areas to turn into grasslands which are an unsuitable habitat for the secretive Amur leopard.