How can humans modify their ecological niches to improve their population? Are there limiting factors? Is there a carrying capacity on the number of humans the planet can support? How important is photosynthesis to the biodiversity of the biosphere on Earth?
What is an ecological niche? Explain intraspecific and interspecific relationships. What is your ecological niche?
What are the relationships between two species in a graph showing a predator-prey cycle?
How do ecosystem services serve humans?
What are the consequences of overexploitation? (deforestation, overfishing, intensive agriculture)
What are the signs of biodiversity health? (ideas: endangered organisms, endangered species, invasive species)

Unit 2: Ecosystems
Week 4: March 1-5
What are the components of a food chain? Differences from a food web?
What is the difference between bioaccumulation and biomagnification?
Summarize in words or drawings the four biogeochemical cycles
What are the four major spheres that explain interactions in an ecosystem?
How is eutrophication caused by humans using the concepts of biogeochemical cycles?
What influences the population of a species in its environment (vocabulary: population, carrying capacity, limiting factors, urban sprawl, densification)