Elevations

In the upper elevations of Arizona, there was a forest of tall Ponderosa pine trees.

The limber pine is the bristlecone’s distant relative and competitor. It also can live a long time – up to 2,000 years. It is found at lower elevations, where temperatures are warmer.

At around 2,200 kilometers in diameter, Hellas Planitia is the largest visible impact basin in the Solar System, and hosts the lowest elevations on Mars' surface as well as a variety of landscapes.

Another example is tamarisk. The shrub was imported from Eurasia and Africa in the mid-1800s to control soil erosion in the American Southwest, but it spread to river systems across the West and up mountainsides, to elevations of 2,000 meters.

In general the physical and mental form of conscious beings is an expression of the character of the planet on which they live. On certain very large and aqueous planets, for instance, we found that civilization had been achieved by marine organisms. On these huge globes no land-dwellers as large as a man could possibly thrive, for gravitation would have nailed them to the ground. But in the water there was no such limitation to bulk. One peculiarity of these big worlds was that, owing to the crushing action of gravitation, there were seldom any great elevations and depressions in their surface. Thus they were usually covered by a shallow ocean, broken here and there by archipelagos of small, low islands.

Rowan trees can be found growing at elevations of up to 1,000 metres – higher than any other tree in the British Isles.

"It was an exciting moment when the penny dropped, and we realized that the two different song types from plain-backed thrushes that we first heard in northeast India in 2009, and which were associated with different habitats at different elevations, were given by two different species," said Per Alstrom of Uppsala University, who led the team.

Emeritus Professor Andrew Blakers at the university’s College of Engineering, Computing and Cybernetics told VOA the process involves transferring water between two reservoirs or lakes at different elevations.

Some of the best marathoners in the world either live or train in the Kenyan towns of Eldoret and Iten, locations that are known for their high elevations. Some cyclists think Machakos could eventually have that same reputation.

The Grand Pacific Glacier originates in Canada’s St. Elias Mountains. It splits at lower elevations, with a substantial amount of ice flowing across the border into what is now known as Glacier Bay.