Why species go extinct usually involves a chain of pressures, including habitat loss, exploitation, invasive species, climate change and small populations.
A food chain is a useful line: producer to herbivore to predator. Real ecosystems rarely work in straight lines. Food webs show the many overlapping feeding relationships through…
Why wildlife conservation matters for biodiversity, ecosystems and people—and why protecting habitats requires more than saving rare species.
A keystone species can reshape an ecosystem despite low abundance. Learn how keystones work, how scientists identify them and why they matter.
The role of predators in ecosystems includes shaping prey, food webs, scavenger communities and, in some cases, vegetation and habitats.
