Answer:
Test a known bloodstain as a positive control and a blank (filter paper) as a negative control (see interpretation of results to determine a positive and negative result).
STRUCTURAL FUNCTIONAL THEORY
<u>Explanation:</u>
The structural functional theory states that the gender inequalities are exist by this method and they create the new ways for the division of labor and the population is clearly responsible for the certain act of the labour in the social system.
The structural functionalism states that it is the building blocks of the society and the frame work for building for the social system which is more compile to perform and the together work promotes the stability. The social system causes the reality and the system parts are functionally correlated.
Explanation:
Fixed> materials for used production, machinery
Variable> Employee salary, wages, rent
shows how each living thing<span> gets food, and how nutrients and energy are passed from creature to creature</span>
