<span>the answer to this question is refraction</span>
It begins at the Baikal Mountains in Russia and ends at the Lena Delta into the Arctic ocean, also found in Russia.
<span>There wasn't many vaccinations back in the day and medicine slowly developed through years passing by. Also eras such as the Black plague and others really helped develop medicines and vaccinations moving forward for people to use.
Hope this helps.</span><span />
Most of the water in the colorado river originates from the Glen Canyon Dam in northern Arizona causing natural runoff precipitation and melting snow coming from the mountains of colorado in Wyoming, Utah and New Mexico.
Cliff collapse can cause land with houses, schools or places of work to be severely damaged or destroyed, this can result in people having to relocate which can cause express and sentimental distress (the impact of this is often greater on the elderly or families). Businesses that have been damaged / destroyed may have to close or make some people redundant if the economic impact on them was high; this has a large economic affect on the individual and any people dependent on them (e.g. Children / elderly parents) but this will also affect the entire community as there will be drops in the local economy which creates a multiplier affect.
Often coastal areas are tourism honeypot sites, if the cliff collapse causes lots of the sites tourists are interested in to be destroyed (e.g tourism shops, caravan sites) then lots of people employed in tourism may be may redundant, this has a wider affect than you may think (e.g. businesses that support this tourism such as companies that make scuba diving kit, dairies which provide milk for I've creams etc).
