Ages 6 to 12 years. Mosquitoes have lived on Earth for over 30 million years! Close-up photographs and detailed illustrations depict the amazing changes a mosquito goes through in four stages: egg, larva, pupa, and adult. Kids will enjoy reading about different species of mosquitoes and -- most importantly -- why they bite! Topics include: mosquito bodies and senses; where mosquitoes lay their eggs; the differences between male and female mosquitoes; the diseases mosquitoes transmit and how to avoid mosquito bites.