All of the above are results
I believe the answer for that is altitude
hope it helped
According to the First World War page on the Australian War Memorial website from a population of fewer than five million, 416,809 men enlisted, of which over 60,000 were killed and 156,000 wounded, gassed, or taken prisoner. The latest figure for those killed is given as 62,000.
Volcanic eruptions can destroy building that store resources, burn trees, kill animals and make land not suitable for farming etc