To write a comparison essay you have to find two subjects that are both similar and different to be compared in a way. once you have your subjects you will need to find facts about the subjects. you will need to identify the basis of the comparison .
for example , "cows and wales" they are both eaten by people . It seems that cows and whales are in a same situation. But there are some differences that could be compared. First, many cows are slaughtered everyday. On the other hand, whales are protected by national law recently. Second, cows are important provisions for all over the world. However, whales are important edible animals only in a few countries. Finally, there is the biggest difference between cows and whales. It is that whales are free in the huge ocean until caught by people, and cows will be grown up in the field by the people to eat.
for example , "cows and wales" they are both eaten by people . It seems that cows and whales are in a same situation. But there are some differences that could be compared. First, many cows are slaughtered everyday. On the other hand, whales are protected by national law recently. Second, cows are important provisions for all over the world. However, whales are important edible animals only in a few countries. Finally, there is the biggest difference between cows and whales. It is that whales are free in the huge ocean until caught by people, and cows will be grown up in the field by the people to eat.