Chpt 4 powerpoint Miller 13th
ECOSYSTEMS: COMPONENTS, ENERGY FLOW & MATTER CYCLING CHAPTER 4 ECOLOGY Study of the relationships between organisms and their environment How organisms interact with their nonliving environment such as sunlight, temperature, moisture, nutrients, etc. KEY WORK IS: INTERACT - Connections in Nature What is an organism? What make up organisms? Organisms are either: EUCARYOTIC - SURROUNDED BY A MEMBRANE HAVE A DISTINCT NUCLEUS HAVE INTERNAL ORGANELLES All organisms except bacteria. PROCARYOTIC - SURROUNDED BY A MEMBRANE NO DISTINCT NUCLEUS NO INTERNAL PARTS SURROUNDED BY MEMBRANES Bacteria What is a SPECIES? How do species differ? What is the difference between sexual and asexual reproduction? Number of species on earth is not known 5 million to 100 million maybe