David Woodfall / Mixture of flowers, including Marigolds (Calendula officinalis) sown to attract wild bee species grown on roundabout / underpass of Motorway, M32, in inner city Bristol, Avon, UK, September.

Petra Wegner,Petra Wegner / Chihuahuas, mixture of longhaired and short-haired sitting in basket.

Karine Aigner / Biologist feeding Hermit thrush (Catharus guttatus) a mixture of elderberry powder. This powder is full of an antioxidant called anthocyanin. The anthocynanin is thought to help birds recover from and...

Philippe Clement / Mixture of colourful wildflowers in wildflower zone bordering meadow, especially planted to attract and help bees, butterflies and other pollinators, Luxembourg, August

Philippe Clement / Mixture of colourful wildflowers in wildflower zone bordering grassland, planted to attract and help bees, butterflies and other pollinators, Luxembourg, August

Alex Hyde / Photographer heating silica gel over camp fire in rainforest to restore its desiccating properties. The high humidity of the rainforest can fog camera lenses and lead to mould growth, so silica gel is...

Jen Guyton / Fairy circle at sunset in the Namib Desert, Namibia. It has recently been found that these patterns are caused by a mixture of termites combined with the action of grasses competing for water.

Jen Guyton / Researcher stands in a fairy circle in the Namib Desert, Namibia. These patterns have recently found that these patterns are caused by a mixture of termites, combined with the action of grasses comple...

Jen Guyton / Fairy circle in the Namib Desert, Namibia. These patterns have recently found that these patterns are caused by a mixture of termites, combined with the action of grasses completing for water. Februar...

Jen Guyton / Fairy circle in the Namib Desert, Namibia. It has recently been found that these patterns are caused by a mixture of termites, combined with the action of grasses competing for water.

Jen Guyton / Fairy circle in the Namib Desert, Namibia. It has recently been found that these patterns are caused by a mixture of termites, combined with the action of grasses competing for water.

Pal Hermansen / Architectural mixture in Russian settlement - Barentsburg, Svalbard, Norway, July 2016.