In the paper Effects of Plant Density on Tomato Yields inWestern Nigeria (Experimental Agriculture, Vol. 12(1), pp.

Question:

In the paper "Effects of Plant Density on Tomato Yields inWestern Nigeria" (Experimental Agriculture, Vol. 12(1), pp. 43-47), B. Adelana reported on the effect of tomato variety and planting density on yield. Identify the
a. Experimental units.
b. Response variable.
c. Factor(s).
d. Levels of each factor.
e. Treatments.