The student clearly states the independent variable as the concentration of the fungicide Dithiocarbamate (Propineb) and the dependent variables as chlorophyll a and b content and germination percentage in Amaranthus species. The research question includes a description of the analysis method, detailing the use of a spectrophotometer and seed counting. A well-developed background theory explains the effects of fungicide concentration on chlorophyll and germination rates, linking relevant biological concepts. However, the student does not adequately explain the choice of techniques for measuring chlorophyll content, nor do they discuss the rationale for the number of trials conducted. Despite this, the student successfully identifies and addresses safety, ethical, and environmental issues, and provides a sufficiently detailed methodology for reproducibility.
