ge People can easily recognize that a butterfly, a horse, or a tree are alive and that a bike, a computer, and a lamp are not. People call a thing living if it is capable of performing certain activities, such as growth or reproduction. Biologists, however, have a hard time defining life. They have difficulty locating the dividing line between living and nonliving things. All scientist do agree however that one characteristic of all living things is the will to live that they all possess. Without this will living organisms would not be ab ....