Which of these taxonomic groups are most closely related: Fungi, Archae, Bacteri, Protists? Explain please

Rank the three variables in terms of how strongly they affect the "species" composition of the bacterial communities. place the variable with the weakest effect on the left and the variable with the strongest effect on the right.

Wich organism obtains its energy from dead or decaying matter

According to this food web which of the following would be considered primary consumers