Our World

Breakup of Gondwana: position of continents on the Southern hemisphere

Distribution of the major water mass in the Arctic Ocean. The section sketches the different water masses along a vertical section from Bering Strait over the geographic North Pole to Fram Strait. As the stratification is stable, deeper water masses are denser than the layers above.

The house sparrow is a small, ubiquitous bird belonging to the family Passeridae. Highly adaptable and closely associated with human habitations, it is one of the most widespread and recognized wild birds in the world.

A domestic pig (Sus scrofa domesticus), specifically showing characteristics often seen in heritage or rustic breeds, such as dark bristled hair, pointed ears, and a leaner snout.

1987