▶ Your Answer : The reading passage contends that cows have the ability to detect the earth's magnetic field by giving three theories. On the other hand, the lecturer brings up several points that contradict this argument. First, the speaker argues that cows' behaviors are different from other animals that can detect the magnetic field of the earth's poles. This is supported by the fact that other animals, such as birds and fish, they detect the earth's magnetic field when they migrate. They need to find direction and often travel thousands of kilometers, but cows just seem to point towards north or south while eating or sleeping, not moving. This casts doubts on the reading passage's claim that cows have evolved the ability to detect the earth's magnetic field. Second, according to the lecturer, online satellite pictures cannot demonstrate the cows' abilities to detect the earth's magnetic field. This is because these pictures are taken not groups of cows but just an individual or a single cow. On top of that, most of them are in slopes of hills that can affect the cows' orientation. This refutes the reading passage's assertion that online satellite pictures can show cows' direction orientation. The final point made by the lecturer is that it is not true that cows will begin to point in random directions if they placed near electrical power lines. According to the studies, cows were divided into two different teams, one is nearby power lines and the other is away from it, but the result was the same that cows continued pointing in the northerly or southerly directions even near electrical power lines. This counters the reading passage's argument that cows will point in random directions if they are in places that can disrupt magnetic fields. |