Soil is formed from the weathering of rocks and minerals. The surface rocks break down into smaller pieces through a process of weathering and is then mixed with moss and organic matter. Over time this creates a thin layer of soil. Plants help the development of the soil.
In NSW it is a different story. It provides guidelines to parents and says a child aged 10-12 years can be left for up to 12 hours but not between 10pm and 6am. They must have a back-up adult available and can look after one or two other smaller children.
How old does my child have to be before I can allow her or him to be home alone? Under Maryland law, a child must be at least eight years old to be left alone in a house or car. State law also says a child must be at least 13 years old to baby-sit another child. Generally, it is left up to the parent to decide whether a child who is at least eight is mature enough to be home alone. Any time you leave your child alone, be sure the child knows what to do in case of an emergency. Baltimore County Department of Social Services' Child Protective Services (CPS) may become involved if a child of any age is left alone and is placed at risk of harm because he or she is unable to manage on his or her own.