Week 3 of 4th six weeks 1/23-1/27

This week we begin a new unit of study on the interdependence among living systems and the environment.  Living things rely on other living things in order to survive.  Also, species depend on other species for survival.  

  Many relationships exist in nature.  Predator/prey, producer/consumer, parasite/ host that occur in food webs within marine, freshwater, and terrestrial ecosystems.