True or false must be perfect or it won’t work I’ll give
1. The Egyptians are known for cuneiform
2. The Samaritans were known for irrigation canals math and soil advances
3.Lebanon and Israel are where the Phoenicians settled.
4. Muslims Worship in Mosques and Hebrews worship in temples
5. Christianity originated in Mecca
6. The holy city for Islam Christianity and Judaism is Jerusalem
7. Hebrews follow the New Testament and Christians follow only the Old Testament

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

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.