The three types of rocks igneous, sedimentary, and metamorphic are all subject to processes that change one rock type into another. The images below show several types of rocks undergoing these processes.
Lime is a soil amendment made by grinding limestone, a naturally occurring type of rock that is very high in calcium. Two types of lime are commonly used in lawns and gardens, agricultural lime and dolomitic lime. Agricultural lime, also sold as garden lime, is made from calcium carbonate.
How can the grass on the greens at a golf course be so perfect? Golf greens need plenty of sunflight and good airflow. If you have ever really looked at the grass on a well-maintained golf green, it is absolutely amazing--it is a flawless surface made out of plants! To make it this perfect takes a lot of work. The work starts by creating what is practically a hydroponic system for growing the grass.