One fourth means (one half) of (one half) .
So the 18 months must be two half-lifes.
The half-life of this particular isotope is 9 months.
Answer:
True
Explanation:
This is true because in our last study, we learned that proteins were processed through these systems-- therefore, making it true.
Answer:
Explanation:
Earth Day is an annual event created to celebrate the planet's environment and raise public awareness about pollution. The day, marked on April 22, is observed worldwide with rallies, conferences, outdoor activities and service projects.
