Answer: Confidential adoption
Explanation:
Confidential adoption also known as closed adoption is referred to as a process under which one tends to adopt an infant and the data or record of his/her biological parents is kept secret or sealed. At several times the record of biological father is not even recorded, even on child's original birth certificate. Adoption of an much older child who tends to have knowledge about his/her biological parents cannot be kept closed or secret.
Answer: It will result in a systematic uncertainty. Therefore the final result will have a systematic error.
Explanation:
Systematic errors are those experimental errors that didn't occurs by chance or nature. Their are those errors that occur in any experiment, as a result of wrong measurements or observation. Because this students has taken a wrong measurements for the length of the pendulum, their results will be affected, though it will be similar to each other's result because all of them applied the same error. But if this practical is rerun, applying the correct measurement, the result Goten will be different from the results gotten by the students. The difference between this two result is called THE SYSTEMATIC UNCERTAINTY.
Answer:
the answer is in the picture below
