Answer:
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Answer:
A
Explanation:
Iron corrodes in moist air. When iron gets exposed to air, it reacts with oxygen molecules to form rust. Rust degrades the quality of iron. Therefore, methods of protection from rusting like, Barf's protection, Sacrificial protection etc. are carried out.
Human evolution is similar to every evolution in the animal and plant kingdom. Forced by the environment both internal and external forces, animals adapted to the extreme conditions they were put in. As humans evovled, bacteria and other microorganisms also evolved to better attack and obtain food from other organisms including mankind.
Answer:
grafting
Explanation:
Grafting is a method used for the creation of grafts, which are instruments used in a type of asexual reproduction for the propagation of difficult root plants. This method is done by plant specialists (such as botanists or agronomists) and consists of the union of two different species. The process takes place between a part of a plant called a graft (or rider) that is inserted into another part of another plant (or another individual of the same species), which may be the root system or the stem known as a rootstock (or horse)