An economic surplus is also known as total welfare. An economic surplus is related to money, and it reflects a gain in the expected income from a product. There are two types of economic surplus: consumer surplus and producer surplus.
A bit academic in terms of style, but accessible, nonetheless! Environmentalism refers to a social movement and associated body of thought that expresses concern for the state of the natural environment and seeks to limit the impact of human activities on the environment.
The ethics of speciesism. What is speciesism? 'Speciesism' is the idea that being human is a good enough reason for human animals to have greater moral rights than non-human animals. ...a prejudice or bias in favour of the interests of members of one's own species and against those of members of other species.