feeding relationships

• A food chain always starts with a producer.
• The arrows in a food chain show the direction of energy flow.
• A food web shows the relationship between different food chains and how animals and plants depend on each other.
• Animals depend on plants for food and shelter.
• Plants depend on animals for reproduction (pollination).
• Food webs show how a change in the population size of one species can affect others in the ecosystem.
• If an organism loses a food source or gains a predator, their number will decrease.
• If an organism loses a competitor or a predator, their number will increase.