This document discusses plants and animals as natural resources. It notes that plants and animals are important for food, materials, fuel, air quality, and as habitat. However, both face threats from habitat loss, climate change, invasive species, soil erosion, and pollution. A graph shows the increasing percentage of threatened species between 2000-2011. Plants and animals are interrelated through food chains and shared habitats, so environmental issues affect both. Their decline jeopardizes sustainability as humans rely on both for survival.