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How can one tiny ant species cause a savanna-wide shift in the food web? Outline the cascading effects of the disruption of one mutual relationship and create graphs that highlight how an invasive species can have significant indirect effects on an ecosystem.

Gardens have many functions ranging from vegetable and fruit production to flood mitigation and erosion control. Gardens also can be a haven for pollinators and a repository for native plants. Over the course of a year, students will design a garden for their school or a community organization using scientific concepts they learn in class.

In the face of habitat loss and pollution, more species around the world are threatened by extinction. But how should conservation resources be allocated? In this activity, students will debate whether the allocation of conservation resources should consider the cultural significance of a species.

Soil erosion happens naturally and through human actions. In this activity, students will explore how an oil spill changed Louisiana’s coastline, and they will look for examples of landscape features that were created by erosion and examples of human-caused erosion in their area.

Students will discuss a disastrous event that led to erosion and use the event to contextualize the impact of erosion on humans and the ways humans increase and decrease erosion. Learning Outcomes: Determining examples of erosion and its positive and negative impacts on humans and analyzing an example of a human-induced ecosystem disruption and understanding how it caused erosion in the ecosystem over time.

Students will answer questions about the online Science News article “The Deepwater Horizon oil spill ruined long-term shore stability,” which explains how damage to plants and soils is causing coastal marshes to retreat in parts of Louisiana. A version of the article, “Shores still reeling from 2010 oil spill,” appears in the March 25, 2023 issue of Science News.

Lakes can vary in color based on levels of sediment, organic matter and algae. Sometimes though, a lake will stand out – not matching the other lakes in an area. Look for these anomalies by participating in a virtual lake scavenger hunt, and help figure out why these lakes don’t fit in! In this activity, students will learn how climate change influences lake color and will investigate lakes with irregular colors that have been impacted by natural or human-made forces.

In this guide, students will learn about scientists’ efforts to estimate how many tree species Earth has, analyze a related data visualization and discuss the implications the research has for conservation.

Students will look at data from a primary research article to explore how tree biodiversity differs across continents and biomes.

Students will answer questions about the online Science News article “Earth may have 9,200 more tree species than previously thought,” which describes researchers’ efforts to estimate the number of tree species on Earth. A version of the article, “Earth may be hiding thousands of tree species,” appears in the March 12, 2022 issue of Science News

In this guide, students will learn how scientists estimated the food intake of certain whale species and discuss nutrient cycling and conservation of matter within ecosystems.

Students will discuss nutrient cycling and conservation of matter, and how these concepts can be observed in an ecosystem.