Answer:
4 is the correct answer since that belongs to one of his postulates.
Yes magnesium is a pure substance and it is a element.
Answer:
A, C, and D
Explanation:
A-Any type of rock can change into any other type of rock by weathering and erosion.
C-Rocks change slowly over time.
D- The rock cycle shows how the three rock types relate to one another.
Its correct on edge
