2Biosphere Biosphere: Biosphere includes: Part of Earth that supports LifeBiosphere includes:Top portion of Earth’s crustAll the water that covers Earth’s surfaceAtmosphere that surrounds EarthWhat are some different environments on our biosphere?DesertTropical Rain Forest
3Biosphere Earth is the 3rd planet from the Sun The amount of energy that reaches Earth from the sun helps make the temperature just right for living here.Why can’t we live on other planets?Mercury = Too hot during the day & too cold at nightVenus = High temperatures & a thick carbon dioxide atmosphereMars = Much colder than Earth & a thin atmosphere
4EcosystemsEcosystemAll of the organisms living in an areaIncludes the nonliving parts of the environment tooExample: Bison, grass, birds, and insects are living organisms in a prairie ecosystem. Water, temperature, sunlight, soil, and air are the nonliving features.EcologyStudy of interactions that occur among organisms and their environment.
5Populations Population: Made up of all the organisms of the same species that live in an area at the same time.All the bison in a prairie ecosystemAll the grasshoppers in the prairie ecosystem make up another populationDo we ever study how these different populations interact together?Yes!
6Populations Community: All the populations of all species living in an ecosystemExample: Prairie community is made of populations of bison, grasshoppers, cowbirds, and all other species in the prairie ecosystem.Arctic community:Populations of fish, seals that eat fish, and polar bears that hunt and eat seals.
7Habitat Where does an organism live? Habitat Place in which an organism livesExample: A woodpeckers habitat is a treeSalamander’s habitat is the forest floor beneath fallen leaves and twigs. They don’t like sunlight – they prefer damp, dark places.This habitat provides the kinds of food and shelter, the temperature, and the amount of moisture the organism needs to survive.