Author: Abdul Wahab
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Bald Eagle
Bald eagles are very popular sea eagles in the US because they are the national birds of US. Bald eagles are not actually bald. The word bald is a modification of an old English word “balde” that means white. They are identified by their white head with a yellow beak. […]
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Oxygen
Symbol: O Atomic Number: 8 Atomic Weight: 16 Melting Point: -218 °C (-361 °F) Boiling Point: -183 °C (-297 °F) Discovered by: W. Scheele and Joseph Priestly independent of each other. Oxygen is a vital element for all the living things on Earth. Almost all the living things need the […]
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Nitrogen
Symbol: N Atomic Number: 7 Atomic Weight: 14 Melting Point: -210 °C (-346 °F) Boiling Point: -195 °C (-320 °F) Discovered by: Daniel Rutherford Nitrogen is a gas with 7 protons and 7 neutrons in its nucleus. It is the major building block of our atmosphere. Our atmosphere is the […]