When a region experiences a significant drought, many animals may die from lack of water and food. […] If tourism declines due to high wildlife casualties, then the locals who depend on income from tourism will lose their livelihood. People may then turn to farming to earn money, but crops require water to grow. This can place further strain on the water supply and worsen the original problem of the drought." What event can cause many animals to die from lack of water and food?

The event that can cause many animals to die from lack of water and food is:

Explanation:

Droughts constitute a huge problem for wild fauna and flora since, depending on their level, a large part of the fauna and flora could die, even more so because the solution of said problem is based on the anticipation and prevention of said event, if identifies that a particular area is historically predisposed to a dry season, artificial reservoirs must be created and the level of evaporation must be minimized (currently, high-density polypropylene spheres are created with a water part inside, which greatly reduce the evaporation) in order to accumulate the water necessary to face the dry season.