Craigslist, ebay, varathane, PayPal, etsy all are consumer to consumer.
consumer protection
There are many examples, actually, all cases of a animal eating another animal are the examples of a consumer eating consumer in that all animals are consumer. for example, a sparrow eats a fly.
It can be many things, for example a lion.
An example of a unicellular producer is a phytoplankton, which uses photosynthesis to produce food. A multicellular consumer example can be a lion, which hunts and feeds on other organisms for energy.
Yes, a cheetah is a consumer. All animals are consumers.
E-bay, amazon
An example is a snake that eat reabbits
a hawk
goods
the producer (grass gets eaten by a consumer (deer)
A squirrel eating a nut is an example of a primary consumer gaining energy. A caterpillar eating a plant