This document discusses environmental ethics and different perspectives on the moral relationship between humans and the natural environment. It defines key concepts like moral agents, moral standing, and moral duties. It also outlines several philosophical perspectives on environmental ethics, including anthropocentrism, stewardship, biocentrism, ecocentrism, and ecofeminism. These perspectives differ in what they believe has intrinsic or instrumental value and in what role and duties humans have regarding the environment. The document emphasizes that understanding environmental ethics obligates humans to care for the Earth with forethought, restraint and preservation of ecological balances.