<span>Their progress and wealth is highly dependent on the harvests, and
the price of grain. They probably have to import some industrial
products and if they had a bad year (weather, other catastrophies, poor
technology) they can't get the necessary amount of industrial products
in exchange for their surplus e. g. in grain. </span>
Answer: An erosion of soil which enters waterways
Explanation:
Acidic water is more poisonous to human, animal and plant life so if acidic water were to wash into a river that humans drink, the health risks posed to those humans would increase.
If there were plants and animals connected to the river, the risks to them would increase as well and disrupt their life cycle.
Acidic water does not make water more or less capable of soil erosion so the water being acidic would not contribute to soil erosion.
The answer is the second one
