What is piled up along the cone of sp crater that causes it to be so steep?

Adeveloping nation's economy is based on a developed nation's economy is based on stay tuned- i may post some more questions from my study guide : )

Need now! 45 points laboratory: weather map interpretation i need someone to answer the other two questions. i will give to the best answer!

Summary of the impact of the physical environment on settlement patterns and economic activities for ukraine