wonderlei wonderlei

07-03-2017
Biology

contestada

What event occurred when the decay of strontium-90 in an igneous rock first started?

Respuesta :

damionjohnson1 damionjohnson1

07-03-2017

If the following graph represents the decay of strontium-90 in an igneous rock, what event occurred at 0 years on the horizontal axis?
I have a graph with the vertical axis showing the percentage of radioactive element remaining.

Answer Link

Otras preguntas

Which of the following was not invented by Benjamin Franklin? (Points : 2) lightning rod bifocal glasses swivel chair steel plow Question 2. 2. Use your complet

Which expression is equivalent to 34 ⋅ 3−9?

Choose the most appropriate answer to the following question. ¿Te gusta escuchar música? A) Sí, me gustan escuchar música. B) Sí, te gusta escuchar música. C) N

Which of the following pairs does not share the same empirical formula? C2H6 and C4H12 C3H6O3 and C2H4O2 C3H8O and CH2O C2H8 and CH4

Write a recursive formula for the sequence 7, 13, 19, 25, 31 then find the next term in the sequence?

How does the ending of 'The Tragedy of Macbeth' by William Shakespeare inspire feelings of pity for Macbeth? A) Macbeth is truly an evil person who cannot help

As per the rules of binomial nomenclature, which species name is written correctly? pelecinus polyturator/ Pelecinus polyturator / Pelecinus polyturator

Fill in the blanks using the correct forms of the indicated verbs. 1.Mis hermanos y yo (conseguir) entradas (tickets) para estudiantes. 2. Yo (repetir) el diálo

Which statement best describes the effect nicotine has on the central nervous system?Select one of the options below as your answer: A. It acts as a stimulant a

You need to dissolve CaCl2 in water to make a mixture that is 40.0% calcium chloride by mass. If the total mass of the mixture is 370.9g, what masses of CaCl2 a