Directions: Read the passage carefully and choose the best word to fill in each blank. In the past, man showed little care for the survival of living things. He changed animals for food, skins, sport or for making preserved collections. Catching living things-such as plants, butterflies and birds’ eggs – and preserving them was once a popular hobby. As a result, some species have disappeared. Today in many countries, people are not allowed to collect certain species of plants and all birds’ eggs. Photographing plants and animals and using animal sounds are two ___27___ which have replaced collecting.