abstract
arm
background
business
change
climate
concept
conceptual
cost
costly
diesel
energy
expense
expensive
fossil
fuel
gas
gasoline
global
grasp
grasping
hand
hold
holding
increase
increasing
industrial
industry
isolated
nozzle
oil
petrol
pollute
pollution
power
pump
resource
rise
rising
silhouette
squeeze
squeezing
unleaded
warming
yellow