biology

7

biosphere "life ball"

the part of earth that contains all ecosystems

goal of science- to investigate and understand the natural world, to explain events in the natural world and use those equations to make useful predictions

life science- studies living things 

physical science- studies matter and energy

earth science- studies earth and space 

theory- an explination of what will happen based on repeated results from an experiment

scientific law- a statment about nature that is always true 

-doesnt always explain why or how something occurs 

abiotic factor- the nonliving factors such as sunlight temp presipitation  humiditysoil type

biotic factor- the living factors such as plant animal bactiria comunities - additional factors include overcrowding deseas compitition famine.

-the role of an organism in its inviroment

-also includes its role in a food web e.g what it eats what it is eaten by

competitive eculsion princible-

-not 2 spiecies can occupy the same niche in the same habitate