The magnification ability and clarity of lenses have changed considerably.
The total amount of water on Earth has remained relatively constant over the past 100 years. However, changes in the distribution of water due to activities like urbanization and climate change may have altered the availability of freshwater in some regions.
The most recent information we can receive about the star would be from about 100 years ago, as it takes light around 100 years to travel a distance of 100 light years from the star to reach us on Earth.
The fastest turn-around time for communicating with a civilization 100 light years away would be 200 years, as it takes light 100 years to travel from Earth to the civilization and another 100 years for their response to reach us.
Calender subdivisions do not recognize any timescales past millennium. Anything past millennium is simply referred to as a millennia (Plural form). Although, you could incorporate the ICS timescale with it, which would have these four following millennium:Age (1 million years)Epoch (10 million years)Era (100 million years)Eon (500 million years)
Because if the Century and the years were the same, I.E. the 19th Century was the year 1901 to 2000, then by default the 1st Century would have to be the years 101 to 200. If that were the case, then what would the year 1 to 100 be called, the Zero century?
Communication has changed very much in the past 100 years.
it hasn't
I might be wrong, but I dont' think that it has!
causes of death have changed over the last 100 years due to many reasons, such as a more widespread recognition of illnesses
computer, tv, car, internet
It has gone from horse-powered to engine-based vehicles.
They have become even more lazy and belligerent
Socks, t-shirts & underwear.
It Has Gone From Telegrams and letter brought by pigeons to phones e-mails etc
It is become smaler and smaler and in 10 years it would be so small you can wear it like a watch
new Britain has been changed over the past 100 years.Like the speed limit people get into so many accident in the past and in the present so they keep adjusting the speed limit according to what they see in drivers.
today, the internet is often used to reach readers and viewers