Naturally occurring structures include canyons such as the Grand Canyon in the United States, mountains such as Mount Everest, and even homes and nests that animals make for themselves, including beehives, ant hills, bird nests and beaver dams. Any form that stands on its own and has a definitive form that was not made by man is considered a natural structure. This is in contrast to man-made structures like buildings and bridges.
Beehives are fantastic examples of the potential complexity and smart design of natural structures. Using materials readily available in nature and following an adapted pattern of behavior that is known by other bees, these insects build complex hives with hexagonal chambers in which to store honey, wax and young bees.Learn More
Any humidity of 30 percent or less is considered low and can be dangerous. Low humidity can cause breathing difficulties, discomfort and may damage a home's foundation.Full Answer >
The leaves of trees in a taiga are described as being needle-like with a dark coloring and waxy coating. Taiga is a coniferous forest filled with spruces, evergreens, pines and fir trees. Unlike deciduous trees, coniferous trees do not drop their leaves.Full Answer >
The sky appears blue because of the scattering of sunlight by atmospheric molecules, or Rayleigh scattering. Rayleigh scattering results in a blue sky because it is most noticeable at shorter wavelengths.Full Answer >
Early land plants faced a number of challenges when they began to colonize terrestrial territories, such as evolving ways to support themselves and prevent desiccation, according to documentation on The University of the West Indies. Additionally, plants had to evolve new methods for spore dispersal and egg fertilization if they were to survive out of the water. Overcoming these challenges led to many of the unique adaptations of modern plants.Full Answer >