The role of an organism and a specie in an ecosystem. including what it eats,where it lives,how it reproduces, and how it interacts with other living and non-living things.
What is a niche
100
Process of changing free nitrgoen so that the nitrogen atoms can combine with other elements to form compounds that organisms can use; carried mainly by bacteria in the soil.
What is "The Nitrogen Fixation"
100
Substance made of only one kind of matter,which has a unique set of properties.
What is a pure Substance
100
unmanned satellites or remote controlled "landers" used to explore ares or objects in space that are too difficult or dangerous to send humans to .
What is a space probes
100
A circuit in which the current can flow in two or more paths .
What is a Parallel circuit
200
A particular enviroment where living things interact with other living things and also non- living things .
What is an Ecosystem?
200
liquid that dissolves and carries substances as it passes through soil.
What is a Leachate
200
A Combination of of pure substances; unlike a compound, the components of a mixture do not combine chemically and are not always in the same ratio.
What is a Mixture
200
The earth - centred model of the solar system originally proposed about 2000 years ago by the greek philosopher aristole.
What is Geocentric Model
200
cell that has its electrolyte in the form of a paste, usually in a sealed case; the type of cell commonly used in portable devices such as flashlights
What is a dry cell
300
They are living things of the same kind that are able to reproduce successfully.
What is a Specie ?
300
That have a density of 5 or higher; they are one type of substance monitored to determine water quality.
What are Heavy Metals
300
Pure substance formed when non-metals combine.
What is a Molecular compound
300
Its 15 to 50 km above the earth's surface; it protects the earth's surface from the sun's ultraviolet radiation.
What is the ozone layer
300
conducter through which electric current enters or leaves a device or material
What is a electrode
400
a process in which the environment "selects" which individuals will survive or reproduce
What is Natural selection
400
Coal,oil, and natural gas are called __________because they are formed from dead plants and animals.
What is Fossil Fuels
400
Workplace hazardoes materials information system
What is WHMIS
400
The force of attraction between masses
What is Gravity
400
dull, brittle element that does not conduct electricity.
What is a non - metal
500
A process in which the environment "Selects" which individuals will survive and reproduce.
What is natural slection
500
When Electrical power generation, Mineral processing, and fertilizing production may release chemicals into the air.
What is Industrial Processes
500
The Change of state from a solid to a gas or from gas to a solid
What is Sublimation
500
A super-dense remnant of a supernova; an object around which gravity is so intense that even ligh cannot escape
What is a Black hole
500
meter that can measure voltage, current , or resistance in a circuit