Answer: Mechanical weathering breaks rocks into smaller pieces without changing their composition.
Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface.
Answer:
2 significant figures i.e. 2 and 7.
Explanation:
We need to find the number of significant figures in the given number i.e.
.
It has 2 significant figures i.e. 2 and 7.
It means the power of 10 doesn't count in the significant figures.
Hence, there are 2 significant figures.
Answer:
ammonium chloride
Explanation:
if it's the white ring I think your talking abt