Help please? I am having trouble

What type of nuclear decay causes the atomic number of an element to increase by 1?

What is special about a dc circuit ?

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?