Answer:
A market for cats would have had a positive externality.
Because the cats would kill the rats on sight since that is their natural behavior.
However, it is interesting to mention, that the cat's killing has been more of a "mythic" aspect of this story, since it fails to take into account that since the black death was caused by the<em> yersinia pestis</em> bacteria, cats could have been also infected, and since their interactions with humans are greater than rats or fleas, the real outcome could have been totally unexpected.
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Evolution and Natural Selection
Answer:
Low rain, fertile soil
Explanation:
Although this question is incomplete, we can still provide some information that can help guide your answer.
Buffalos (or bisons) were once an abundant species that roamed the American plains. The number of buffalo decreased from about 60 million to a couple dozen between the early 1800s and the early 1900s. However, in recent years, government efforts have brought back this species from the brink of extinction.
While often associated with the American West, these animals lived in other regions of the country, including Texas. The number of buffalo in Texas varied based on several factors, including many geographic ones, such as rain and soil quality. For example, when rain was scarce, vegetation was hard to find. Water was also found in limited supply. This led the buffalo to migrate to other areas. Similarly, areas with fertile soil were used for agriculture, which made the land unavailable to the herds. These are examples of geographic factors that had a significant impact on buffalo in Texas.
Answer: oil, coal, natural gas, and stone
