Which ancient civilization place a great deal of the importance are practicing a healthy lifestyle including exercise and eating right

Ancient Greece is the right answer.

Explanation:

Ancient Greece civilization developed in world history during the 8th century BC. The Greek civilization was divided among several city-states such as Athens, Sparta etc. This civilization place an exceptional significance on practicing a healthy lifestyle including exercise and eating right. This was considered important since people of the nation had to stay fit to protect the nation from external invasions.

the answer is to check all of them! they all apply well at least i think so!

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.