1. Nerea Alba Ignacio

2. what is an ecosystem? An ecosystem is a combination of three components: a place or a habitat,the living things that live there and the relationships between them. 3. FEEDING RELATIONSHIPS Living things in an ecosystem are classified as producers ,corsumers or decomposers depending on how they get their food.PRODUCERS:Plants and algae,in aquatic ecosystems,are producers. COSUMERS:Animals are consumers. DECOMPOSERS:Fungi and microscopic organisms called bacteria are decomposers. 4. HUMANS AND ECOSYSTEM Natural resources are all of the things we obtain from the Earths ecosystems and use to meet our needs.