Why you expect the shaded soil area beneath a tree to be rich in organic matter?

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

[fw.02]sinkholes are often formed as a result of the actions of. a.heat on recharge b.pressure on aquifers c.acid in groundwater d.minerals in hot springs

You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone,pumice, and gneiss.