If We Start with 1

question 82

Multiple Choice

If we start with 1.000 g of strontium-90, 0.908 g will remain after 4.00 yr. This means that the half-life of strontium-90 is __________ yr.

• A)3.05
• B)4.40
• C)28.8
• D)3.63
• E)41.6

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Definitions:

Significant Event

An occurrence of notable importance, often changing the course of history or impacting a large area or population.

Type of Isolation

Various forms of separation in biology that prevent species from mating and producing viable offspring, critical in the process of speciation.

Arctic Fox

A small mammal adapted to living in cold climates, known for its thick fur and opportunistic feeding habits.

Grey Fox

A small carnivorous mammal native to North and Central America, known for its gray fur and ability to climb trees.