Final answer:
Synthetic elements can be harmful due to their radioactive properties and potential effects on human health, such as radiation sickness and increased cancer risk. Plutonium, a synthetic element, is highly toxic and can cause long-term damage to organs.
Step-by-step explanation:
A synthetic element may be harmful due to its chemical properties and potential effects on human health. Synthetic elements are artificially created in laboratories and often have unstable nuclei, making them radioactive. Exposure to radioactive materials can lead to various health problems, including radiation sickness, DNA damage, and an increased risk of cancer.
For example, plutonium, a synthetic element, is highly toxic and poses serious health risks when ingested or inhaled. It can accumulate in the body over time and cause long-term damage to organs, such as the liver and kidneys. Additionally, synthetic elements may also have unknown effects on the environment and ecosystems, further highlighting their potential harm.