'Economics is a science which studies human behaviours as a relationship between ends and scarce means which have alternative uses. 'Ends' her refers to

In economics, 'ends' refers to human wants or desires. These are the things that people seek to satisfy or fulfill through their economic activities. Human wants are unlimited, but the resources available to satisfy them are limited. Therefore, individuals have to make choices about which wants to satisfy with the limited resources available to them. Economics is the study of how people make these choices and allocate their scarce resources to satisfy their unlimited wants.