How much does it cost to leave a light on for 24 hours?

How much does it cost to leave a light on for 24 hours?

A “normal” incandescent bulb costs about 0.75cents per hour, and LEDs or CFLs cost only one-sixth of that – so leaving the lights on (either overnight or while you’re at work for the day, say both are about 8 hours) costs you roughly 6 cents for a normal light and a bit over 1 cent for modern bulbs.

How many species of fish are in the great barrier reef?

More than 1,500 fish species live on the reef, including the clownfish, red bass, red-throat emperor, and several species of snapper and coral trout. About 5,000 species of mollusks live on the reef.

What was the fastest wind speed ever recorded?

The fastest wind speed not related to tornadoes ever recorded was during the passage of Tropical Cyclone Olivia on 10 April 1996: an automatic weather station on Barrow Island, Australia, registered a maximum wind gust of 408 km/h (220 kn; 253 mph; 113 m/s).

Do sharks have any bones in their body?

Skeleton. Shark skeletons are very different from those of bony fish and terrestrial vertebrates. Sharks and other cartilaginous fish (skates and rays) have skeletons made of cartilage and connective tissue. Cartilage is flexible and durable, yet is about half the normal density of bone.

What does the number of calories in a food tell you?

A calorie is just a measurement of energy- the amount of energy needed to raise 1 gram of water 1 degree Celsius at standard atmospheric pressure. This makes sense when talking about calories in food. Food provides energy and our bodies need this energy to function throughout the day.

What does hoorah mean in the military?

Oorah is a battle cry common in the United States Marine Corps since the mid-20th century. It is comparable to hooah in the US Army and hooyah in the US Navy and US Coast Guard. It is most commonly used to respond to a verbal greeting or as an expression of enthusiasm.

How many cervical vertebrae does a giraffe have?

Surprisingly, even with its long neck, the giraffe has the same number of vertebrae in its neck as humans do. Giraffe have seven cervical vertebrae, but each one can be about 10 inches long.

Can a shark blink with both eyes?

Sharks have eyelids, but they do not blink because the surrounding water cleans their eyes. To protect their eyes some species have nictitating membranes. This membrane covers the eyes while hunting and when the shark is being attacked.