Why should Europe and other developed countries be concerned about the aging population?
younger workers cannot compere for jobs against the elderly people, who work for
less money
The elderly population is shrinking because people are dying younger for work related
stress
younger workers pay taxes that cover pensions, retirement, and healthcare for elderly
people
elderly workers do not have the skills necessary to compete in the job market today
Whild Vallsvetene
seifid

c. younger workers pay taxes that cover pensions, retirement, and healthcare for elderly  people.

Explanation:

Elderly people for the most part do not work as they are retired. To support their living expenses, they are paid pensions, retirement benefits and provided with healthcare.

These things are usually paid for by taxes. Younger people are the working population so pay the most tax. If there are less younger people therefore, tax revenue will decrease which would put the above mentioned programs at risk because there would be less money to pay for them.

c, they united with once

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.