The Earth is roughly a sphere. The Earth is an irregularly shaped ellipsoid.
Answer:
do u mean I have to answer all the questions
Cliffs will form due to weathering.
Answer:
Granite
Explanation:
Obsidian is an extrusive rock, as it is formed on the surface of the Earth from lava, which is magma that has emerged from underground. However, granite is intrusive since it is formed from magma that cools and solidifies within the crust of the planet.