Which of the following is the most recent addition to the accepted model of the atom? (2 points) atoms are indivisible particles. protons are located in the nucleus. electrons form a cloud around the nucleus. neutrons orbit the nucleus along circular paths.

The accepted model of an atom was made by Schrodinger, which is known as the quantum mechanical model. Unlike Bohr's model, electrons are represented as a cloud and not small balls orbiting the nucleus. There is no define path of electrons in Schrodinger's model, but it can predict the odds of where an electron is located. 

The answer to your question is then Electrons form a cloud around the nucleus.

Decomposition is the cycle at which bacteria breaks down any organic material into the soil

Descriptive investigations are mainly questions to uncover information. it does not have an hypothesis. it's mainly gathering information, it is not repeatable as you are just asking questions.