Table 2 Analytic coding rubric for trade-offs systems: biomass energy production.

From: FEW questions, many answers: using machine learning to assess how students connect food–energy–water (FEW) concepts

Part A rubric

Part B rubric

Bin

Brief description

Bin

Brief description

A

Increased water consumption

A1

Less food produced

B1

Water scarcity/not enough water total

A2

More land converted to meet food needs

B2

Generally, less water/decrease in water available

B1

More water use

B3

Less water for other things

B2

Less water available

B4

Change in human behavior in water use

C1

Energy produced (corn creates biomass energy)

C

Water prices change

C2

Energy return on investment (ethanol is less efficient/lower EROI than other sources)

D

Changes to river

C3

Renewable energy, more sustainable energy, lower environmental impact source of energy

E

Impacts to biodiversity/wildlife/ecosystem