Answer:
Reliance on available subjects(convenient sampling)
Explanation:
Reliance on available subjects(convenient sampling): It is about relying on the subject that deals with the great caution factor in the research. It is also called a convenient sampling. In this sample, the researcher does not have any control over the representatives of the sample size. This sampling method is used to measure the characteristics of people at a particular time. Convenient sampling is used as a pilot study at the beginning of the research. So this is a useful method but the result outcomes are not generalized to the population.
Some organisms are called produces because they produce foods for other organisms