Science Facts Set-28

• Aqua regia is a liquid that can dissolve noble metals such as gold and platinum.
• Light cannot escape from the gravitational pull of a black hole.
• Streptococcus pneumoniae is the bacteria that causes pneumonia.
• Perennials are plants that live for more than two years.
• Dolphins are one of the most intelligent animals on the Earth.

• Solder is an alloy used for joining metals. It has a melting point ranging from 90° to 450° Celsius.
• Cryogenics is the study of materials and phenomena at temperatures close to or equal to absolute zero.
• Anthophobia is the fear of flowers.
• The feathers of birds are made up of a substance called keratin.
• Dendrology is the branch of botany which deals with the study of wooded plants.