The development of large farms has polluted the river through waste runoff.
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I would say that you have to look up this answer or ask another person because this is tricky
Cold air is correct answer
Answer:
It’s the first one, humans
A tornado<span> begins in the organization </span>stage<span>, when it forms through a series of updrafts among cold and warm air systems. When the swirling air touches the ground, it is officially a </span>tornado<span>. In the mature </span>stage<span>, a </span>tornado<span> reaches its full development in terms of base size and wind speed.</span>
