Can a shark swim backwards?

Can a shark swim backwards?

Unlike fish, sharks cannot stop suddenly or swim backwards. A shark’s pectoral fins cannot bend upwards like a fish, limiting its swimming ability to forward motion. If a shark needs to move backwards, it uses gravity to fall, not swim backwards.

What the boiling point of water in Fahrenheit?

On the Fahrenheit scale, the freezing point of water is 32 degrees Fahrenheit (°F) and the boiling point 212 °F (at standard atmospheric pressure). This puts the boiling and freezing points of water exactly 180 degrees apart.

What does the MI in mi5 stand for?

“MI5/MI6” were the original designations when both organisations came under the War Office, now the MOD – “MI” stands for military intelligence. Their official names (acquired in the 30s) are the Security Service (MI5) and SIS, the Secret Intelligence Service (MI6).

How quickly to rats reproduce

Rats multiply so quickly that in 18 months, two rats could have over a million descendants.

When were oreos invented?

Oreo is a sandwich cookie consisting of two chocolate discs with a sweet cream filling in between. The version currently sold in the United States is made by the Nabisco division of Mondelēz International. Oreo has become the best selling cookie in the United States since its introduction in 1912.

When was the United States capital moved from Philadelphia to Washington DC?

This mansion at 6th & Market Streets served as the presidential mansion of George Washington and John Adams, 1790–1800. Philadelphia served as the temporary capital of the United States, 1790–1800, while the Federal City was under construction in the District of Columbia.

How fast was the meteor that killed the dinosaurs?

Scientists calculate that it was blasted into Earth by a 10-kilometer-wide asteroid or comet traveling 30 kilometers per second — 150 times faster than a jet airliner. Scientists have concluded that the impact that created this crater occurred 65 million years ago.

Which planet is known as bright wandering star?

It is the fifth planet from the Sun, and it is more than twice as massive as all the other planets combined. Jupiter is the fourth brightest object in the sky (after the Sun, the Moon and Venus). It has been known since prehistoric times as a bright “wandering star”.