How Much Does a Zookeeper Make Per Year? Average Zookeeper Salary. A Zookeeperâs salary typically starts at about $21,000 to $25,000 and ranges up to $39,000 at the high end. The average across the United States is $29,000 and this varies from state to state.
1 Wildfires can be caused by an accumulation of dead matter (leaves, twigs, and trees) that can create enough heat in some instances to spontaneously combust and ignite the surrounding area.  Lightning strikes the earth over 100,000 times a day. 10 to 20% of these lightning strikes can cause fire.
On average, more than 100,000 wildfires, also called wildland fires or forest fires, clear 4 million to 5 million acres (1.6 million to 2 million hectares) of land in the U.S. every year.In recent years, wildfires have burned up to 9 million acres (3.6 million hectares) of land.A wildfire moves at speeds of up to 14 miles an hour (23 kilometers an hour), consuming everythingâtrees, brush, homes, even humansâin its path.There are three conditions that need to be present in order for a wildfire to burn, which firefighters refer to as the fire triangle: fuel, oxygen, and a heat source. wildfire moves at speeds of up to 14 miles an hour (23 kilometers an hour), consuming everythingâtrees, brush, homes, even humansâin its path. There are three conditions that need to be present in order for a wildfire to burn, which firefighters refer to as the fire triangle: fuel, oxygen, and a heat source.