Symbiosis How Different Animals Relate Bobbie Kalman Crabtree Publishing Company www crabtreebooks com
What is symbiosis Symbiosis is a difficult word but it is an easy idea It describes the close relationship of two different species of living things that help harm or have no effect on each other This book is about the four main kinds of relationships that different animals have Which of these relationships do you have with other people or animals ticks 4 Four symbiotic relationships Mutualism Both species benefit from their relationship Commensalism One species benefits and does not help or hurt the other species Parasitism One species benefits while harming another species Predation One species a predator benefits by feeding on another called its prey
This impala and the dog on the opposite page both have ticks on their bodies Ticks feed on the blood of these animals The birds shown here called oxpeckers are looking for ticks to eat Why does the impala allow the birds to sit on its head and back 5
