Living things are interdependent. People can choose to care about and protect living things. Soil is made up of living and nonliving things. Soil supports life, and life enriches soil. People depend on soil.
People can choose to enrich and conserve soil.
In an ecosystem living things depend on each other and on nonliving things. Living things have adapted to their habitats. Ecosystems change because of natural causes and human alterations. People can choose to respect living things and help to restore or preserve ecosystems. Water cycles through living and nonliving things.