Modern biogas plant in a rural region to generate electricity and heat from renewable energies stock photo
Melancholy photo of a family with a semi-transparent father as a symbol of death or separation stock photo
Beautiful street with houses with a facade of natural stone in Tempio Pausania in the north of Sardinia stock photo
Contract is checked with a magnifying glass on the subject of monthly costs as a result of a contract stock photo
Burrow with the view from the hole towards the sky as a special symbol for planting, mouse hole or molehill stock photo
The expiry of time to protect the climate represented by an hourglass in front of the sky stock photo
Carbon monoxide alarm in a room heated by the gas stove as protection against suffocation stock photo