Earthworm has been used as bioindicator of soil pollution around Benghazi City, Libya. It was observed that earthworms body weight were increased significantly, in all locations soil compared to control earthworm. The study reported increased in cocoon number which can lead to can reduce in to decline in earthworm population and consequence to reduce soil fertility. Metabolomics for soil contamination assessment has carried out. The organisms commonly selected for this method of toxicity testing are earthworms....For details consult https://www.omicsoline.org -- earthworm

https:''www.intechopen.com DOI:10.5772/58294

The term OMICS is an abbreviation of toxicogenomics that "deals with the gene and protein activity within a particular cell or tissue of an organism in response to exposure to toxic substances".

To be able to measure omics endpoints for the selected organisms, you need to identify the relevant cells/organs/organisms and focus on their specific detoxification pathways. Some pathways have already been identified and are available in the literature or in AOP databases that can be consulted in http://www.oecd.org/chemicalsafety/testing/adverse-outcome-pathways-molecular-screening-and-toxicogenomics.htm

To measure the relevant endpoints, you will also need the relevant tools to implement these molecular methods (e.g. RT-PCR...).

You can find one exemple for cadmium in yeast at

DOI: 10.13140/RG.2.1.1657.0008

@ Sylvester Peter Antai and Genevieve Deviller I appreciate your responses. They have been very helpful in giving me proper footing to progress with my work.

I will appreciate any further information or materials that will assist in the work.

Omics is a very broad terms which involves genomics, proteomics, metabolomics, transcriptomics etc. Depending on what you are interested in, you could use any of the omics techniques.