Ecosystem Services Practice Test

Ecosystems provide services that support human and ecosystem well-being. In a coastal ecosystem model, sand dunes covered with beach grass sit between the ocean and houses. During a storm, waves hit the dunes, and the dunes reduce how far water and sand move inland. People and nesting shorebirds are shown behind the dunes. Which ecosystem service is shown?

Ecosystems provide services that support human and ecosystem well-being. In a farm ecosystem model, flowering plants along the edge of a field attract bees. The bees move from flower to flower and then visit the crop plants. Later, more fruits form on the crop plants. Which evidence-based statement about ecosystem services is supported by the model?