Learn about food webs and food chains with this interactive worksheet, featuring diagrams and questions to explore ecosystem relationships.

- A food web is a complex network of interconnected food chains that shows how energy and nutrients flow through an ecosystem among different organisms.
- If the snake population decreases, the populations of its prey (like frogs and birds) would likely increase due to reduced predation, while the populations of its predators (like hawks and owls) might decrease due to less available food.
- An ecosystem is considered to be in equilibrium when the populations of all species remain relatively stable over time, with balanced birth and death rates and sustainable resource use.
- As we move up from one step to another in a food chain or web, energy decreases significantly at each trophic level because most energy is lost as heat during metabolic processes, leaving only about 10% available for the next level.
- A food chain is a linear sequence showing how energy and nutrients are transferred from one organism to another, starting with a producer and ending with a top predator.
- The producer in the food chain is grass.