a gyser
2 mph
Yes.But I think it's pretty expensive.
There is no known good natural source of vitamin D other than exposure to sunlight. If needed, there are always Vitamin D supplements, however these aren't as efficiently absorbed compared to the natural source.
Positives include the fact that it is an enormous reserve of renewable energy; negatives are that it can seriously impact an environment, and is not the most stable of sources.
Yes. Peanut butter - in particular the organic and natural varieties - is considered a source of healthy nut oils, and a good source of vegetarian protein.
Probably not, but if you want protein eat meat.
home
they don't burn fossil fuels
This is a subjective matter and can include many forms of natural wonder. There are animal migrations, fish swarms, simultaneous flowerings of plants and even some causes of disaster could be regarded as wonderous. Cloud formation and weather systems are an ever changing wonder to some. Among those things that would be regarded as a natural wonder by a good proportion of people would be; The Great Barrier Reef The Himalayas The Grand Canyon Niagara Falls The Aurora Borrealis
Probably never. Most of the earth is too flat for good hydroelectric production. People tend to live on the flatter parts, for practical reasons. So for most folks, no hydroelectric.
Stevie Wonder was good
Windmills and solar panels are good sources of renewable energy, as well as hydroelectric energy found in dams. I have also recently heard of a home heating and cooling system that uses geothermal energy by running pipes through the ground on your property.