1. Yellow Fever, Dengue Fever and Japanese enecephalitis
2. There are 3,500 named species of mosquito
3. They have been on earth for more than 100 million years.
4. If the caribous wouln't be there, the mosquitoes couln'd drink any blood, and the caribous wouldn't eat the grass, transport nutrien or feed the wolves the whole ecosystem would be out of order and there wouldn't be ant ecosystem in this area.
