you do not have to pay for twitter.
They pay more for goods but enable workers to earn more money
lungs
An operating system is a software which enable the user to interact with the computer.
consumers and producers
enable or diable
mixed
Free-Market system
truee
A food web diagram can be used to show the population of producers, primary consumers, and secondary consumers in a system. This diagram displays the various feeding relationships in an ecosystem, illustrating how energy flows from producers to consumers.
Consumers and producers
The retail system. Thats where the consumers decide what they are going to purchase.