Question

researchers want to use eDNA to look for an invasive species in a waterway. Which of these steps should they do first

Answer 1

the answer is option at least

Answer 2

You have not provided the options to answer this question. But according to my knowledge, The first step to use eDNA to look for an invasive species in a waterway is the precipitation of DNA in each sample.

Plants or animals or other species that have the proper characteristics that enable them to grow in a section wherever they are not found naturally or in the case of a farm or garden. The primary definition refers to the phrase in non-indigenous species terms (e.g. Plants or animals) which adversely affect habitats economically, environmentally or ecologically invaded by them. In this sense, it was used by government organisations.