Answer:
Natural protein fibers.
Explanation:
Fibers such as wool, hair,and silk, are made of protein. These are all natural fibers.
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Evolution by natural selection.
survival of the fittest=natural selection
Answer:
A : cohesion and adhesion
Explanation:
Answer:
Different diseases are caused by different types of micro-organisms. Microbes that cause disease are called pathogens. It is important to remember that: A pathogen is a micro-organism that has the potential to cause disease.
