Aluminum is not considered a heavy metal due to its relatively low density and atomic weight compared to other heavy metals.

Industrial activities, such as mining, smelting, and manufacturing, are the major contributors to heavy metal contamination in the environment.

Lead exposure, especially in children, can lead to neurological damage, impaired cognitive function, and behavioral problems.

Humans can be exposed to heavy metals through inhalation, ingestion, and skin contact, depending on the source and form of the contamination.

Mercury toxicity primarily affects the nervous system, causing neurological symptoms such as tremors, memory loss, and impaired coordination.

Cadmium exposure can lead to kidney damage, bone disease, and an increased risk of cancer, particularly lung cancer.

Mercury contamination in seafood can lead to neurological problems, including impaired cognitive function and coordination.

Aquatic organisms primarily take up heavy metals through ingestion of contaminated water, sediment, and food.

Cadmium exposure can lead to kidney damage and, in severe cases, kidney failure.

Arsenic exposure can increase the risk of various types of cancer, cardiovascular disease, and neurological disorders.

Arsenic contamination in rice can lead to skin lesions, neurological problems, and an increased risk of cancer.

Terrestrial organisms primarily take up heavy metals through ingestion of contaminated soil, plants, and prey.

Cadmium exposure can lead to bone disease, including osteoporosis, and an increased risk of fractures.

Lead exposure can cause neurological damage, kidney damage, cardiovascular disease, and an increased risk of cancer.

Lead contamination in air can lead to respiratory problems, including impaired lung function and increased risk of respiratory infections.