Answer:

Explanation:
Alkaline earth metals are in group 2. The number of valence electrons of elements in group 2 is 2.
The wood turns into ash and smoke so mass is nor destroyed or created.
Answer:
for volume only liters can be used
Explanation:
Watson and Crick first contribution to DNA science was they proposed the theory of the structure of DNA. Watson and Crick's model DNA In the shape of a double helix. they determined the structure of DNA, it is a double helix. DNA molecule that helped scientist better understand the structure of DNA.
Answer:
50cm
Explanation:
because thats the only thing i got