1. Harvest fresh aloe vera and watercress leaves.

2. Extract the juice from the aloe vera leaves by cutting them open and scooping out the gel.
3. Extract the juice from the watercress leaves by blending them with a little water and then straining the mixture through a cheesecloth to separate the juice.
4. Mix the aloe vera juice and watercress juice together in a container.
5. Use a spray bottle to apply the mixture to contaminated areas in the environment, such as soil or water sources.
6. Allow the mixture to sit for some time before rinsing it off or wiping it clean.
7. Repeat the process as needed until the desired results are achieved.

Remember to wear gloves and protective gear when handling potentially toxic substances and to always follow safety guidelines when cleaning up contaminated areas.

What are their potential studies to be carried out in the future research studies

Some potential future research studies related to using aloe vera and watercress for environmental cleanup could include:

1. Studying the effectiveness of aloe vera and watercress juice mixture on different types of contaminants, such as heavy metals, oils, and chemicals, to determine their broad-spectrum cleaning capabilities.

2. Conducting toxicity studies to assess the environmental impact of using aloe vera and watercress on soil, water, and wildlife.

3. Investigating the optimal concentrations of aloe vera and watercress juice in the mixture for maximum cleaning efficiency.

4. Evaluating the long-term effects of using aloe vera and watercress for environmental cleanup on soil health, water quality, and overall ecosystem stability.

5. Exploring the potential for scaling up the use of aloe vera and watercress for large-scale environmental remediation projects, such as contaminated industrial sites or areas affected by oil spills.

6. Investigating the mechanisms by which aloe vera and watercress are able to bind and remove contaminants from the environment, potentially leading to the development of new environmentally friendly cleanup technologies.

Overall, further research is needed to fully understand the potential benefits and limitations of using aloe vera and watercress for environmental cleanup and to ensure their safe and effective use in real-world applications.