Tomorrow Today_Test 1

Human cells have how many chromosome pairs
3
23
43
243
How many rocks and minerals have scientist found?
Less than 100
More than 3000
Between 30 and 70
What state of atter is the sun?
Solid
Gas
Liquid
Plasma
Nitrogen helps in burning?
True
False
Flammability is a what change of matter?
Physical
Chemical
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