Scientists are using a control sample that is known to be from bighead carp in an eDNA surveillance study. What purpose does this control serve?

Which of the following claims does the author support the least

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

Actinobacteria sp. are fermenting organisms (which do you use oxygen to breathe) referred to as chemoorganohetereotrophs this means they break down organic material and convert it to inorganic material. which part of the carbon cycle does this describe