Phytoremediation is the process of using plants to remove pollutants from the environment.

Bioaccumulation is the process by which pollutants are taken up and stored in an organism's body.

Genetic engineering for phytoremediation is the process of using genetically modified plants to remove pollutants from the environment.

Increased risk of environmental contamination is not a benefit of using genetically engineered plants for phytoremediation.

Phytoextraction is the process of using plants to remove heavy metals from the environment.

Iron is not a type of heavy metal.

Phytodegradation is the process of using plants to remove organic pollutants from the environment.

Carbon dioxide is not a type of organic pollutant.

Phytoremediation is the process of using plants to remove radioactive pollutants from the environment.

Oxygen is not a type of radioactive pollutant.

Phytovolatilization is the process of using plants to remove gaseous pollutants from the environment.

Water vapor is not a type of gaseous pollutant.

Phytoremediation is the process of using plants to remove nutrients from the environment.

Carbon dioxide is not a type of nutrient.

Phytoremediation is the process of using plants to remove pathogens from the environment.