why do screech owls screech at night

why do screech owls screech at night

Heard at dusk and into the night, the Western Screech-Owl's most distinctive vocalization is its "bouncing ball" song: a series of 5в9 short, whistled hoots, speeding up ping-pong-ball fashion toward the end. The male uses this for territorial and courtship advertising, often calling from a nest tree or a prospective nest site. In duets sung by a mating pair, the female's notes are interspersed with the male'sвher voice higher than her mate's, despite her larger size. To stay in contact, pairs of screech-owls use a short "double trill" call; when agitated, they make a barking sound. ...

 why do you lose your memory when drinking

why do you lose your memory when drinking

So what s happening inside your brain after having too much to drink? Preventive health expert Dr Ross Walker says alcohol degenerates cells rapidly and mainly affects the liver, heart and brain. If you did a CAT scan of an alcoholic s brain at age 40 and compared that to the brain of a normal 40-year-old, there would be much less tissue in the brain, he told news. com. au It rots the brain, basically. Chronic consumption of alcohol has been linked to alzheimers. Alcohol can have a dramatic impact on memory, according to a 2004 US. The paper reviewed decades of information on alcohol and brain health. Alcohol primarily interferes with the ability to form new long-term memories, leaving intact previously established long-term memories and the ability to keep new information active in

 why do we add chlorine to drinking water

why do we add chlorine to drinking water

In a paper published in 1894, it was formally proposed to add chlorine to water to render it "germ-free". Two other authorities endorsed this proposal and published it in many other papers in 1895. Early attempts at implementing water chlorination at a water treatment plant were made in 1893 in, Germany, and in 1897 the town of, England was the first to have its entire water supply treated with chlorine. Permanent water chlorination began in 1905, when a faulty and a contaminated water supply caused a serious typhoid fever epidemic in, England. Dr. Alexander Cruickshank Houston used chlorination of the water to stop the epidemic. His installation fed a concentrated solution of so-called chloride of lime to the water being treated. This was not simply modern calcium chloride, but

 why is my steam generator iron leaking water

why is my steam generator iron leaking water

Household irons can drip and spit out liquid water from the holes in the metal sole plate instead of producing steam if you have set the temperature too low. The obvious remedy is to increase the temperature, but this setting is not appropriate for all types of fabric. ...

 why do we decorate a christmas tree

why do we decorate a christmas tree

Why we have Christmas trees in our homes is not a question many ask в itвs one of the most magical Christmas traditions there is and it happens because thatвs what you do. But when you think about it, for one month of the year, you have a tree in your living room, hallway, dining room or wherever else you choose to deck the halls. Itвs not like a bunch of peonies в itвs a tree and itвs in a pot inside your home. So why DO we have Christmas trees in our homes at Christmas? The act of putting up a Christmas tree can be traced back to the 1500s in eastern Europe. The first recorded tree put up for Christmas was in 1510 in Latvia and 1521 in Slovakia, according to the Christianity Today website. However, the tradition of putting trees in homes during wintertime в and not just Christmas в goes

 why do plastic window frames need no painting or maintenance

why do plastic window frames need no painting or maintenance

Media upload failed. You can try to add the media again or go ahead and post the answer Media upload failed. You can try to add the media again or go ahead and post the question Uploaded image is less than the minimum required 320 x 240 pixel size. Sorry, file format is not supported. You can only upload images of a size less than 5 MB. You can only upload videos of a size less than 60 MB. Go ahead and post your answer. ...

 windows server 2012 who is logged in

windows server 2012 who is logged in

The purpose of this article is to show you how to log off users automatically after being disconnected for a certain amount of time. Sometimes users or employees in your company may forget to log off from the server, and their user account remains logged in consuming precious CPU cycles and memory. For example a server with 4GB of RAM would have a memory usageВof 89% with 2 disconnected users and 1 logged in user compared to 59% memory usage with just 1 user logged in. This will significantly affect system performance because the page file will be used more actively starting at 75% memory usage. Rule of the thumb, if your memory usage is frequently too close to 75% all the time, I suggest upgrading your server. ...

 why do plants grow better in sunlight

why do plants grow better in sunlight

Light is something that sustains all life on this planet, but we may wonder why do plants grow with light? When you buy a new plant, you may wonder what kind of light do plants need? Do all plants need the same amount of light? How can I tell if my plant is having problems with too little light? Keep reading to answer these questions on how light affects the growth of a plant. All things need energy to grow. We get energy from the food we eat. Plants get energy from light through a process called. This is how light affects the growth of a plant. ...

 why do the sunnis and shiites fight

why do the sunnis and shiites fight

The divide between the Sunni and Shiite branches of Islam is both ancient and still highly consequential today. In Syria, a Sunni-majority country dominated by members of a Shiite sect, fighting that began as anti-government has taken on sectarian overtones. That has spilled over to Iraq, which is Shiite-majority and has a predominantly Shiite government but is increasingly troubled by Sunni rebels. And the region's major powers have long pushed sectarian interests, with Shiite-majority Iran on one side and Sunni-majority Saudi Arabia on the other. In this two-minute video, reporter Karen DeYoung and The Washington Post's video team give a very brief history of the Sunni-Shiite divide and what it means for Iraq's escalating violence today. It's important to note that this religious

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