Science 9 test 1
define biotic
Living parts of an environment
Define abiotic
Non living parts of an environment
Define greenhouse gases
Gases that absorb solar energy in Earths atmosphere
greenhouse effect
Process that absorbs outgoing solar energy in Earths atmosphere
Define producers
Living things that make their own food to get the energy they need
Define consumers
Living things that eat producers or other consumers to get the energy they need
define decomposers
Living things that break down dead organic material to get the energy they need
define the food chain
A model that describes how food energy is passed from one living thing to another
define the food web
A model of feeding relationships shows a network of interacting and overlapping food chains.
define energy pyramid
A model that shows the amount of energy available in each level of a food chain
transpiration
Process by which water is absorbed by the roots of plants, carried through the plant, and lost as water vapour through small pores in the leaves
define water pollution
Any physical, biological, or chemical change in water quality that has an adverse effect on organisms or that makes water unsuitable for desired uses
define bioaccumulation
The process in which pollutants collect in the cells and tissues of organisms
define biomagnification
The increase in concentration of pollutants in tissues of organisms that are at successively higher levels in a food chain or web
define global warming
An increase in the average temperature of Earths surface
define global climate change
A long term change in Earths climate
define smart growth
Strategy focussed on concentrating growth in the centre of a city, rather than in outlaying areas