1. The problem statement, all variables and given/known data
Sun to plant
Worm eating a plant
Bird eating a worm
Human eating a bird
Human throwing a ball up in the air
Plant to coal
Coal to a factory
Factory to power lines
Power lines to computer
Sun to Rubber tree
Rubber tree to factory
Factory to ball (manufacture)

3. The attempt at a solution

Sun to plant – light energy
Worm eating a plant – chemical energy
Bird eating a worm – chemical energy
Human eating a bird – chemical energy
Human throwing a ball up in the air
Plant to coal – chemical energy
Coal to a factory
Factory to power lines
Power lines to computer – electric energy
Sun to Rubber tree – light energy
Rubber tree to factory
Factory to ball (manufacture)

Correct me if I’m wrong on these.