In the red print could someone please tell me How many molecules are in this total i would really appreciate it :) I will give a brainless for the correct )

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

9. the history of life on earth is recorded in

Describe how viruses and bacteria can be used as biological weapons. what are some of the potential threats and potential benefits? do you agree with the use of viruses and bacteria as biological weapons? why or why not?