Little Ice Age Analysis

The reading states that scientists have long wondered what caused the little ice age. The reading provides three reasons to illustrate the debate. On the other hand the professor mentions all the ideas that discussed in the articles outdated. He refutes each of the author`s reasons.

First, the passage explains that the cooling may have been caused by disrupting of oceans currents. However, the professor in the lecture opposes this and says these currents happened only in North America and Europe, but not in Newzeland and South that not explaining what happened in Ice Age.
Second, the article asserts that volcanic eruption have caused the little Ice Age. In contrast, the professor explains that if the volcanic eruption was strong enough to