However, they are still considered different from other parasites. Many types of parasites carry and transmit disease. Lyme disease is trasmitted by deer ticks. A parasite and its host evolve together. The parasite adapts to its environment by living in and using the host in ways that harm it.
Hosts also develop ways of getting rid of or protecting themselves from parasites.
For example, they can scratch away ticks. Some hosts also build a symbiotic relationship with another organism that helps to get rid of the parasite. Ladybugs live on plants, eating the aphids and benefiting by getting food, while the plant benefits by being rid of the aphids.