Solution how to get rid of ants in your house for IELTS Recent Actual Test With Answers Listening Practice Test 2

PETE: no, dick, harry’s twin. Anyway, he told me how few trees there were now and how to get rid of ants in your house how much empty ground that grows al­most nothing. He said the place looked more like the desert than how to get rid of ants in your house jungle in some parts. It brought environmental damage. So I started looking for materials in the library. Here, look at this magazine.

PETE: then read what the article says. Right there. The first thing it points out is how soil samples how to get rid of ants in your house show it is hard for anything to grow there. It says how an area of 21,000 square kilometres has lost most of its forest in how to get rid of ants in your house the past ten years. See, there are graphs. As the number of farmers increases, the acres of for­est have decreased. It’s an inverse relation.

PETE: I’m just starting to look into that subject, but my sister marie is a geologist and she says how to get rid of ants in your house the problem is that the soil has too much saline, with no plants helping to adjust the chemistry. Apparently, that’s a common problem with soil types throughout areas with how to get rid of ants in your house rainforest. Once you lose the plant cover, it’s difficult to bring it back. Reforestation is almost impossible, even if the land is not being used for other how to get rid of ants in your house purposes.

PETE: saline is salt dissolved in water. Scientists who’ve gone there have taken measurements. They do this by gathering a sample of the soil how to get rid of ants in your house and running a simple test that shows the ion­isation of the solution. The geology department in our own university has reviewed the how to get rid of ants in your house soil at the site, too. They’re right. It looks pretty bad. The level of salinity is going up. But the plants that would solve that problem can’t be planted in soil like that. There is a narrow spectrum of salinity in which the how to get rid of ants in your house plants will grow.

PETE: oh they’re definitely reliable. They include four members of the faculty from the geology how to get rid of ants in your house department right here at MIT. Here, study these photographs and check the damage your­self. That’s what dr horst who wrote this book here did. He’s newly appointed, but dr schnee says he’s brilliant.

Good afternoon, and welcome to insect biology 101. I’d like to begin this course with a few remarks how to get rid of ants in your house about good insects and bad ones. Bugs are all around us and that’s both a benefit and an annoyance – some­times maybe even serious harm. First, let’s talk about the good things that insects do for how to get rid of ants in your house us.

Probably the most important insect for humans, and maybe for all other life, is the bee. Bees help plants in the process of pollination, and thus are necessary to most flowers and fruit-producing trees. That is, they carry pollen from “male” flowers to “female”. If it weren’t for bees, we’d have very few food plants and no fruit either. In fact, there would be no "we”. No less a thinker than albert einstein pointed out that, without bees, humanity would be dead within a year or less. We’d starve. It’s that simple. That should maybe make us just a little humble.

A little less dramatic is the fact that bees also how to get rid of ants in your house make the honey we eat. Moreover, they produce beeswax, which is useful in candles and it’s also used as a first-rate furniture polish. Sure, these may not be vital to our lives, but they can serve as reminders of how important bees how to get rid of ants in your house are. That’s a point I keep coming back to in this how to get rid of ants in your house course. Though, in all fairness, I should point out that butterflies aid in pollination as how to get rid of ants in your house well as bees.

Now, here in michigan, what’s the worst part of summer? Yep, that’s right – mosquitoes. But I’m talking about helpful insects, right? So let’s look at the dragonfly first. If there were no dragonflies, there would be even more mosquitoes! Dragonflies mainly eat mosqui­toes and also a few other insects. Yes, that’s right. They don’t just fly around, and they also help to eliminate harmful insects. So, the next time you see a dragonfly, don’t you dare kill it!

Now let’s talk a little about those harmful insects. Take the mosquitoes I just mentioned as an example. Not so many years ago, mosquitoes here in america weren’t just annoying. Some were even deadly. They carried malaria and yellow fever. My own ancestor, the confederate general john bell hood, lived through the worst battles of civil war only to how to get rid of ants in your house die at age thirty-eight from yellow fever. A pest, not a bullet!

Well, besides the mosquitoes, in summer there is also a kind of insect that how to get rid of ants in your house never seems tired. Right, that is the fly. Before I go on talking, I must mention an african fly called the tsetse fly, which feeds on blood and can cause serious diseases in how to get rid of ants in your house the people and animals that it bites. Besides, it is still a bearer of sleeping sickness, which affects around 300,000 people every year in africa and can be treated how to get rid of ants in your house only with toxic drugs that are hard to administer. Worse still, the drugs sometimes don’t work.

Other insects, of course, destroy food crops. In china, for instance, locusts continue to be a danger to the harvest in how to get rid of ants in your house some areas. Less important, but still annoying, moths eat people’s clothes and dust mites slowly destroy carpets. Worse, but still in the home, termites or “white ants” eat wood – the wood of your house. If they are not stopped, they can eventually destroy the whole building. Usually they seriously damage a building before anyone even notices how to get rid of ants in your house them. So, as we all know, insects can be a real trouble.

For some decades in the west, to kill insects with chemicals seemed a good remedy. Unfortunately, chemicals can only be used in a limited area for how to get rid of ants in your house a limited time. It’s a small-scale solution. The insects come back. Worse still, some of the poisons used like DDT were found harmful how to get rid of ants in your house to the environment. Many kinds of wildlife, like hawks, were harmed. And people in chemical-using rural areas have one of the highest rates of how to get rid of ants in your house liver cancer in the world. It’s no secret that the chem­icals remain harmful to humans.

Like all species, insects adapt to their changing environments at an amazing rate. When a new chemical is introduced to their habitat, the insects that survive are generally the ones with some how to get rid of ants in your house way of resisting the harmful effects. They then breed with the other survivors, and just like that insects become resistant to most poison how to get rid of ants in your house in a few generations. An insect generation, remember, is a couple of months at most!

So, again we have to ask: what to do? Well, there are biological solu­tions. Some of these are pretty simple. One is destroying the insects’ habitat. You take away their home or food. Cleaning your kitchen is the best way to prevent roaches. No garbage: no food. Getting rid of marshes and swamps eliminates mosquitoes. Other solutions might include bringing in dragonflies or bats in how to get rid of ants in your house areas where mosquitoes are many. This is a cheaper alternative to chemicals. Biological methods like this also bring no extra pollution to how to get rid of ants in your house the environment. But you have to be careful. If you change the environment too much, you might be hurting other forms of life accidentally.

One recent method of controlling insect populations involves inter­rupting their breeding cycle. What does that mean? It means "birth control for bugs”. Insects are provided with food that makes them unable to how to get rid of ants in your house reproduce. Since they can’t have babies, the population disappears, or nearly so. And since no young are born, resistance is not a problem with no young insects developing how to get rid of ants in your house increased resistance.

Interrupt the life cycle, eliminate the bug! It’s clear that we must have an understanding of the how to get rid of ants in your house life cycle of the insect. At least, that’s the plan. We’ll go into more details as this course goes along. Now I will stop here to see whether you have how to get rid of ants in your house any questions or not.

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