One of the Radioactive Isotopes That Fell on the Land

question 43

Multiple Choice

One of the radioactive isotopes that fell on the land and got into the food chain after the Chernobyl accident was ¹³¹I. Its half- life is 8 days. How long was it, following its deposit on the land, before its radioactivity had fallen to 1/32-- about 3%-- of its initial value?

• A) 48 days
• B) 40 days
• C) several years
• D) 16 days
• E) It is impossible to say, even approximately.

---

Definitions:

Enduring Patterns

Persistent and consistent ways of thinking, feeling, and behaving that establish a person's personality.

Sensitivity

The ability to perceive or feel things deeply, often used in reference to emotional or physical stimuli.

Twenty-third Pair

Refers to the last pair of human chromosomes, which determine an individual's sex: XX for females and XY for males.

Chromosomes

Thread-like structures located inside the nucleus of animal and plant cells, made of protein and a single molecule of DNA, carrying genetic information in the form of genes.