Answer in few words:
1.Why caterpillars need to shed their skin when they grow bigger?
2.Why wool yielding animals have a thick coat of hair?
3.What is the structural unit of fabric?
Answers
Answer:
1. As their body grows, they have to move out of their skin because it becomes too tight for them. This process takes place 3 to 5 times in caterpillars till they are fully grown.
2. Wool yielding animals are found in the colder regions . They have thick fur coat on their body to keep them warm in cold climatic conditions. They do so by trapping the heat in their coat which helps in keeping them warm.
3. The yarn, which is usually assumed as a homogeneous material, is considered as the basic structural unit of the fabrics. The elastic properties of the homogeneous yarn result from the elastic properties of the fibres and include the non-linear structural synergy of them within the yarn body.
Answer:
1. Caterpillars shed their skin when they grow bigger but humans do not. ... As their body grows, they have to move out of their skin because it becomes too tight for them. This process takes place 3 to 5 times in caterpillars till they are fully grown. In humans, skin cells also grow with the body.
2. Wool yielding animals are found in the colder regions . They have thick fur coat on their body to keep them warm in cold climatic conditions. They do so by trapping the heat in their coat which helps in keeping them warm.
3. The yarn, which is usually assumed as a homogeneous material, is considered as the basic structural unit of the fabrics. The elastic properties of the homogeneous yarn result from the elastic properties of the fibres and include the non-linear structural synergy of them within the yarn body.
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