What is the main difference between a producer and a consumer? give an example to support your answer

Producers have the ability to make their own food using an energy source, like the sun. An example of this would be a plant.
Consumers are broken into two groups: primary and secondary. 
Primary consumers are the herbivores that eat the producers. 
Secondary consumers are the carnivores that eat the primary consumers.
Deer are herbivores and wolves are carnivores; they are both consumers.
So the main difference between producers and consumer are that producers make their own food and consumers can't. They eat producers and other consumers.

It is used to during sexual reproduction between humans