Question

define mechanical method chemical method and biological method

Answer 1

Mechanical weed control is any physical activity that inhibits unwanted plant growth. Mechanical, or manual, weed control techniques manage weed populations through physicalmethods that remove, injure, kill, or make the growing conditions unfavorable. Biological techniques aremethods or procedures that are used to study living things. They include experimental and computationalmethods, approaches, protocols and tools for biological research.

Answer 2

ANSWER:
MECHANICAL METHOD:
Mechanical stabilization is accomplished by mixing or blending soils of two or more gradations to obtain a material meeting the required specification. The soil blending may take place at the construction site, at a central plant, or at a borrow area.

CHEMICAL METHODS:
Chemical Methods: Solvothermal synthesis is a method for preparing a variety of materials such as metals, semiconductors, ceramics, and polymers.

Biological Method of Study:
The scientific method, in which biological problems are solved, is termed as biological method. It comprises the steps a biologist adopts in order to solve a biological problem.

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