Which of the following can identify atoms of the same element but with different charges? This question has more then one answer

1. [] Atoms with the same number of electrons

2. [] Atoms with a different number of protons

3. [] Atoms with a different number of electrons

4. [] Atoms with the same number of protons

cells spend most of their time in interphase

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

what? are the statements?