which pair of organism can be in a parasite/ host relationship?
There are many pairs of organisms that can be in a parasite/host relationship. Some common examples include:
1. Fleas and dogs: Fleas are parasites that live on the bodies of dogs, feeding on their blood.
2. Mosquitoes and humans: Mosquitoes are parasites that feed on the blood of humans, transmitting diseases in the process.
3. Ticks and deer: Ticks are parasites that attach themselves to the bodies of deer, feeding on their blood.
4. Lice and humans: Lice are parasites that infest the hair and skin of humans, feeding on their blood or skin cells.
5. Tapeworms and humans: Tapeworms are parasites that live in the intestines of humans, obtaining nutrients from their host's food.
6. Bed bugs and humans: Bed bugs are parasites that feed on the blood of humans while they sleep.
These are just a few examples, as there are numerous parasite/host relationships throughout the natural world.