Almost 80% of Yellowstone is forest. Summer of severe drought ,lightning caused fires are common, although most summers are quiet cool and wet.In summer like 1988,thousands of acres may burn, even if the fires are fought.People don’t like forest fires, because they disrupt vacations.They change the look of the park, and may spread outside the park. Despite the disadvantages, the Yellowstone ecosystem needs fires to stay healthy.It sometimes helps make landscape people like to see.How to solve this is Yellowstone needs fires to stay healthy, fires help build the landscape people like to see.Sometimes it helps grow trees.The fires can be bad in yellowstone, they can burn down a lot of the woods. They can be harmful to the environment and to the animals.