Identify Look at the first picture. Label the oldest and youngest layers of rock in the picture. Assume that the layers have not been disturbed. can someone plss help me??​

Which of these conditions most likely produces an unstable isotope?

Why does his teacher ask him to balance the equation by including the correct coefficient

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false