Planting trees and proper waste disposal refers to two consecutive measures for land resources.
land and resources
Two resources found on land are soil, which is essential for plant growth and agriculture, and minerals, such as coal and iron ore, which are mined for various industrial purposes.
sustainable use of resources
Motors are protected in two ways. Against a short circuit by fuses or breakers. Against overload by thermal overload heaters.
to make jobs to live
pollution
abrasion and impact
abrasion and impact
Economic resources are classified into two categories. These are natural resources (land), and human-made resources which (capital, enterprise and labor.)
Abrasion and hydraulic action
They knew the land, and knew where to find resources.