Minamata and Itai-Itai diseases caused by metallic water pollution are caused by the following metals respectively:

Question

Question

Answer 1

Explanation:

Minamata disease:

Minamata disease is sometimes referred to as Chisso-Minamata disease.
The disease Minamata was first discovered in 1956 in Japan.
It is a neurological syndrome caused by severe mercury poisoning.
It is methylmercury (MeHg) poisoning that occurred in humans who ingested fish and shellfish contaminated by MeHg discharged in wastewater.
Symptoms include ataxia, numbness in the hands and feet, general muscle weakness, narrowing of the field of vision, and damage to hearing and speech.

Itai-Itai:

Itai-Itai, which literally translates to ‘it hurts, it hurts’ is the name given to cadmium poisoning.
This name was given to the disease by the locals of Toyama Prefecture of Japan in 1912.
This disease was recognized as the Four Big Pollution Diseases of Japan.
Cadmium is a naturally occurring toxic heavy metal.
It is an extremely toxic industrial and environmental pollutant classified as a human carcinogen.
It is used in the manufacturing of NiCd rechargeable batteries.

Thus, Minamata and Itai-Itai diseases caused by metallic water pollution are caused by Hg and Cd metals respectively.

Additional Information

Brief details about the diseases caused by environmental degradation:

Name of disease	Causative agent	Effect on Human Health
Respiratory problems	SO2	Wheezing, shortness of breath and chest tightness and other problems.
Blue baby syndrome	Nitrate	The decreased oxygen-carrying capacity of haemoglobin in babies leading to death
Silicosis	Silica	Increases the risk of chronic bronchitis
Emphysema	Smoke of cigarette	Breaking down of sensitive tissue of lungs
Asbestosis	Asbestos	Serious lung disease
Pneumoconiosis	Deposit of coal dust	Black Lung disease