Plants provide oxygen for humans. Aquatic systems remove pollutants from water. Salt marshes reduce the energy in hurricanes as they come ashore. These are all examples of , or nature's contribution to people (NCP).

One category of nature's contribution to people (NCP) are ecosystem services. Identify all the examples of ecosystem services.Multiple select question.Wetlands reduce the impact of heavy rains.A new large lake gets greater biological diversity over time.Decomposers recycle dead organisms in grasslands.A forest improves the air quality.

One of the advantages of kelp forests is their ability to remove excess nitrogen and phosphorus compounds from coastal waters.What is the most likely source of excess nutrients?A. Sea ice melting, which releases trapped particles.B. Rain falling on farmland that then carries nutrients into waterways.C. The byproduct from organisms as they convert carbon dioxide and water to create energy.D. Water evaporating from the surface of the ocean increases the amount of nitrogen and phosphorous compounds in the water.

Explain why the rapid removal of oxygen from sea water leads to the deaths of many plants and animals.

List human activities that negatively affect ecosystems, and their impacts.

Wildlife habitat, erosion prevention, and oxygen production are just some examples of the benefits derived from ______.Multiple choice question.nonrenewable natural resourcesforestsriversfisheries