System Collection

Sailors demonstrating flag semaphore system

Illustration of human respiratory system showing oral cavity, and nasal cavity, larynx, trachea, bronchus, and lungs

Solar panel with sun

Circulatory system of heart and lungs, computer artwork. The heart (centre) is a hollow muscle that pumps blood around the body

Edge of frontal system, low angle view, dusk
Southland, South Island, New Zealand

Jet engine, internal components, cross-section

Illustration of Crayfish (Austropotamobius), showing circulatory system

Pak Ou Caves in Laos

Solar panels and sky

Installation of a solar collector, near Freiburg in Breisgau, Baden-Wuerttemberg, Germany, Europe

Doctor examining a patient

Installation of solar panels near Freiburg im Breisgau, Baden-Wuerttemberg, Germany, Europe

Black compass

A yellow and a black pencil crossing out the letterings Familien, Hartz IV and Rente, German for families, Hartz IV, a German unemployment benefit, and pension

Small umbrella on a hard drive, symbolic image for data protection

Solar panels a the roundabout island, Ost district, Woergl, Tyrol, Austria, Europe

Solar plant near Freiburg im Breisgau, Baden-Wuerttemberg, Germany, Europe

Aerial view, rape fields in full bloom with enclosed groves, Gross Pankow Prignitz, Brandenburg, Germany

Aerial view, copse, fields, Muhl Rosin, Mecklenburg-Western Pomerania, Germany

Aerial view, electricity pylons in a field, Gutov, Mecklenburg-Western Pomerania, Germany

Aerial view, rape field, copse in a field, near Gustrow, Gutow, Mecklenburg-Western Pomerania, Germany

Aerial view, Rape fields between Gohren and Klink on the Muritz lake, Gohren-Lebbin, Mecklenburg-Western Pomerania, Germany

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