A population of an animal decreased, and it is believed to be due to industrialization (pollution). What is the first steps that should be taken when attempting to identify the reason for the decrease in population?

Hi maybe subtract? (Sorry I’m not helpful

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.