Avertical cross section of soil extending from the surface to the deepest extent of plant root activity or to the regolith and bedrock is known as

A vertical cross section of soil extending from the surface to the deepest extent of plant root activity or to the regolith and bedrock is known as soil profile. This profile is the vertical section of the soil that is exposed by a soilpit. It is composed of a series of horizons, or layers of soil stacked on top of one another like layers of a cake. 

Why the planet stays in orbit is because of inertia (object stays in motion until a force changes it’s motion) also the atmosphere and gravity!

Answerencourage alternative timber sources,increase public awareness of the forests,increase research into forestry,involve local communities in forest projectsalso one of the main initiatives of the 1977 act was to introduce a new approach to forest management known as selective management system, this is recognised as one of the most sustainable approaches to tropical forestry management in the world