Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 40.

The elephant is the largest animal to walk on Earth. An elephant can carry a load of 1,200 pounds. They eat 300 pounds of food a day. An elephant baby can weigh 200 pounds at birth. Elephants can live up to 70 years. Elephants can be trained to carry logs with their trunks. They also use their trunks for drinking water, bathing, eating and communicating. There are two kinds of elephants : the African elephant and the Indian elephant. African elephant can be characterized as larger ears. The African elephant grows up to 10 feet and weighs as much as 12,000 pounds. The Indian elephant grows up to 9 feet tall, and weighs up to 800 pounds. This elephant is characterized as smaller ears. Another name for the Indian elephant is the Asian elephant.

What is the topic of the passage?