Skip to main content

Pesticides

Pesticides include herbicides, fungicides and insecticides. They are used especially in a monoculture to control agricultural pests. Most pesticides kill the harmful organisms, as well as, the harmless and beneficial ones. Insecticides kill pollinating agents like bees and butterflies along with pests like leafhoppers, stem borers and yam beetles. In addition, animals like toads and birds that used to feed on the killed organisms find that their food source is gone and move to other areas, thus affecting the ecosystems. These are the immediate results of spraying pesticides.
    When crops are sprayed with pesticides, some fall on the crops and some fall on the ground. When such crops are eaten, the pesticides tend to accumulate in the body of the consumers. Over a period of time, the pesticides accumulate in their bodies, building up to toxic levels and causing them harm. The pesticides that fall on the ground get into the ground water and eventually reach surrounding water bodies. Here, they get into the bodies of living organisms and cause harm.
    Today, farmers are advised to use pesticides with great care and only when essential. Scientists have produced a number of pesticides which do not build up in the bodies of living organisms. Many farmers also control population of insect pests by introducing animals which prey on them. However, caret must be used to make sure that the introduced predator does not upset the ecosystem.

Comments

Popular posts from this blog

Why kids run away

Why Kids Run Away Remember how you felt the last time you got in a big fight with your parents or one of your brothers or sisters? That kind of anger and hurt can be what pushes someone to run away from home.These are problems faced by lots of kids and teens — and there are ways to deal with all of these problems besides running away. Kids who think about running away might not know how to solve tough problems or don't have adults to help them. Sometimes a really big problem can make it seem like running away is the only choice. Unfortunately, the problems kids hope to escape by running away are replaced by other — sometimes even bigger — problems of life on the streets. When you think about running away, you probably imagine that there will be no more rules, no parent to tell you what to do, no more fights. Sounds great and exciting, right? In reality, running away is anything but fun. Kids and teens who run away face new problems like not having any money, food to eat, a s...

THE RIVER CROSSING.

It is no military secret that an opposed river crossing operation is difficult even under ideal conditions. But without adequate standard equipment and with a poor level of training of soldiers and officers, it could become impossible. But the Army Headquarters and Supreme Headquarters had strongly advised against embarking on an opposed river crossing because of inadequacy of equipment and deficiency in the training of troops for such a semi-specialist operation. The Supreme Headquarters had advised on unopposed crossing while the division passed through 1 Division's secure position to capture the town. The Division commander decided to take a grave and calculated risk that could be called bravado. But if the operation had been successful, as it nearly was, it would have been one of the most praiseworthy operations of the entire war. In the end, it failed and the commander had to take the blame for it.     The first landing, in which the Division Commander himself took part,...

How to lose weight

Choose a low-carb diet If you want to lose weight you should start by avoiding sugar and starch (like bread). This is an old idea: For 150 years or more there have been an infinite number of weight-loss diets based on eating fewer carbs. What’s new is that dozens of modern scientific studies have proven that, yes, low carb is the most effective way to lose weight . Obviously, it’s still possible to lose weight on any diet – just eat fewer calories than you burn, right? The problem with this simplistic advice is that it ignores the elephant in the room: Hunger. Most people don’t like to “just eat less”, i.e. being hungry forever. That’s dieting for masochists. Sooner or later a normal person will give up and eat, hence the prevalence of “yo-yo dieting”. The main advantage of the low carb diet is that they cause you to want to eat less . Even without counting calories most overweight people eat far fewer calories on low carb. Sugar and starch may increase your hunger, while avoiding t...