Biology Optics Chemistry Climate Change ???

100

What is a cell wall
An structural layer made of cellulose surrounding the cell

100

What is a Concave Mirror
A mirror that is curved inwards

100

What is the formula of water
H2O

100

What is weather
The environmental Conditions that occur at a particular place at a particular time
 

200

What is a system
A group of organs that work together and provide an organism with an advantage for survival

200

What is White Light
A Light that can produce all the colors you see

200

What is Methane
CH4

200

What is an Atmosphere
The envelope of gases surrounding the Earth
 
   

300

What is HOFBrINCl
Hydrogen, Oxygen, Fluorine, Bromine, Iodine, Nitrogen, Chlorine

300

What is Green House Gases (G.H.G)
Carbon Dioxide in an example of this
 

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