1 answer:
Answer:
An element is a substance that is made up of the same kind of atoms and
cannot be broken down into simpler substances by any known chemical means
examples of element are iron boron carbon helium calcium hydrogen etc
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Answer: false 100
Explanation:
if this is the true or false test here
Answer: Planet A: 76% Nitrogen, 23% Oxygen, 1% Other
Explanation: Hope this helps!
Explanation:
1.) 175 km to μm
3.) 385 nm to dm
5.) 492 μm to m
1 μm = 
7.) 
dm to mm
1 dm = 100 mm
9.) 
mm to km
11.) 
m to km
m = 0.001 km
13.) 
m to nm
15.) 
m to pm
17.) 
m to um
1 m = 
19.) 
m to Mm
1 m = 
21.) 
Tm to nm
