The Chinese kept silk production a secret because it was very important to their culture and economy for thousands of years.
Answer:
A primary group is a group in which one exchanges implicit items, such as love, caring, concern, support, etc. Examples of these would be family groups, love relationships, crisis support groups, and church groups. Relationships formed in primary groups are often long lasting and goals in themselves.
Explanation:
Flint was used to make some tools and weapons.
C. Surviving on nuts and roots
In a person who is heterozygous for the Huntington's disease allele, the expression of one allele can occasionally be blocked by another allele in the heterozygous genotype. Recessive is the term used to describe the hidden allele. By convention, the recessive allele is written with a lower case letter.
Uncontrolled movement of the arms, legs, head, face, and upper torso is the primary sign of Huntington's disease. Additionally, thinking and reasoning abilities such as memory, focus, judgement, and the capacity to plan and organize suffer with Huntington's disease.
A defective gene that results in areas of the brain gradually deteriorating over time is the cause of Huntington's disease.
Learn more about Huntington's disease here
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