Hans Christian Oersted accidentally discovered that a compass needle deflected when an electric current passed through a nearby metallic wire.

Oersted demonstrated that electricity and magnetism are related phenomena, providing a crucial foundation for understanding electromagnetism.

Non-biodegradable substances are materials that cannot be broken down by biological processes. They may persist in the environment for a long time, potentially causing harm to various members of the ecosystem due to their inert or toxic nature.

Biodegradable plastics are a new type of plastic designed to break down more quickly and completely than traditional plastics. They are generally more environmentally friendly as they decompose into non-toxic components. However, the actual impact on the environment can vary ...

The depletion of the ozone layer has been primarily linked to synthetic chemicals like chlorofluorocarbons (CFCs), which were historically used as refrigerants and in fire extinguishers.