Each radioactive element has a constant rate of decay. What is it called? Chose the correct answer. a
radiation
b
radioactive decay
c
half-life
d
energy and particles

Which of the following regions has what is considered the most rugged terrain in oklahoma? a. the wichita mountains b. the arbuckle mountains c. the sandstone hills d. the ouachita mountains

Choose the item that is an example of the geographic theme of place.

Following lenins death, who took control of the soviet union