What information can scientist learn from studying ice cores?

the composition of ancient atmosphere
the diet early mammals
the. amount of solar radiation
earthquake activity

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

Answer trigonal pyramidal;