Question

*Complete the following correlation. Water polluted with lead: Dementia:: Water polluted with cobalt: ______*

1️⃣ Paralysis
2️⃣ Skin cancer
3️⃣ Swelling of the lungs
4️⃣ Itching eyes​

Answer 1

Health effects of cobalt

• As cobalt is widely dispersed in the environment humans may be exposed to it by breathing air, drinking water and eating food that contains cobalt. Skin contact with soil or water that contains cobalt may also enhance exposure.
• Cobalt is not often freely available in the environment, but when cobalt particles are not bound to soil or sediment particles the uptake by plants and animals is higher and accumulation in plants and animals may occur.
• Cobalt is beneficial for humans because it is a part of vitamin B12, which is essential for human health.

Answer 2

Water polluted with lead: Dementia:: Water polluted with cobalt: Paralysis

• Cobalt is a reactive element that reacts with oxygen in the air, causing plants, animals, and humans to be affected by its high levels in the atmosphere.
• Humans have been shown to be paralyzed by high levels of cobalt in their drinking water.
• Thus, the correct analogy is Water polluted with lead: Dementia:: Water polluted with cobalt: Paralysis