Population of animals has always either increased or decreased, most of the time it decreases due to limit factors such as water, food, place and temperature. I have researched a bit about some endangered animals and decided to set this on Slovakia. Most of the animals in Slovakia are taken care of, either with care, or people sponsoring them, however there are still some endangered animals.
Some of these for example are:
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Most of the animals I found, were snails which I thought was pretty interesting becasue I didn't know snails could be endangered and surely not in Slovakia. Population growth isn't always bad, sometimes, when the species is about to die out, it might be the most sufficient thing to do. Populations can be limited to some factors such as water, food, space and weather, these are called limiting factors. If a population doens't have enough of these, or it doesn't fit them and their environment, they will stop reproducing and the population goes down. Birth rate and death rate also affect a population, if too many of one kind are born, it can cause problems but the opposite can do the same. This is why many countries and cities are starting to take control over the animals they posses, this way they can give them what they need to survive, but make sure they stay a certain amount. The rest is up to mother nature. But after all every country, continent or city, has it's own animals needs and even thought they don't always think at animals and how their actions could affect the populations, there are still some people who are trying to change that.
http://www.earthsendangered.com/search-regions3.asp
Glenn, C. R. 2006. "Earth's Endangered Creatures" (Online). Accessed 30/11/2011 at http://earthsendangered.com.
Some of these for example are:
- Dalmatian Pelican (Bird)
- Apollo Butterfly (insect)
- Danube Salmon (Fish)
- Egyptian Vulture
Most of the animals I found, were snails which I thought was pretty interesting becasue I didn't know snails could be endangered and surely not in Slovakia. Population growth isn't always bad, sometimes, when the species is about to die out, it might be the most sufficient thing to do. Populations can be limited to some factors such as water, food, space and weather, these are called limiting factors. If a population doens't have enough of these, or it doesn't fit them and their environment, they will stop reproducing and the population goes down. Birth rate and death rate also affect a population, if too many of one kind are born, it can cause problems but the opposite can do the same. This is why many countries and cities are starting to take control over the animals they posses, this way they can give them what they need to survive, but make sure they stay a certain amount. The rest is up to mother nature. But after all every country, continent or city, has it's own animals needs and even thought they don't always think at animals and how their actions could affect the populations, there are still some people who are trying to change that.
http://www.earthsendangered.com/search-regions3.asp
Glenn, C. R. 2006. "Earth's Endangered Creatures" (Online). Accessed 30/11/2011 at http://earthsendangered.com.
Everywhere you look, you see people texting or calling, ever thought of how much your brain might be affected? Of course not, who would bother to think of it, I must admit not even I would think of it, but new studies have showed that the brain is affected by the radiations from the phone. But what ever you do, try not to keep your phone close to your head for more than about 30 minutes, 50 seconds, make it already very busy. This might be because we are sensitive to electromagnetic radiations, and to solve this, 47 participants joined a little fun way of seeing if the brain reacts. What these participants did, was place one phone(off) by their left ear and one on by their right ear, however, the one by their right ear was on mute just to make sure the scientists weren't testing hearing. After 50 minutes of this, PET scan were taken. PET scans are ways of seeing inside the body, the opposite of "x-rays". For this method, a chemical gets imported into the human body, and pretty much goes to the part of the body we wish to examine and it will reflect, color, and acts just like light, allowing us to see different pattern and identify what is going on. The results of these test, proved that the left side with the phone off stayed the same as before, but the side with the phone talking even thought it was muted, caused more glucose appearing on the brain. Glucose is the sugar that provides fuel to the brain cells. In other words, the right side was using as much glucose as our brain uses when we talk.
When I first read this article I wasn't as surprised that phones aren't good for us because I heard of it before, but when I read about the glucose part, I thought that was pretty interesting, because poor our brains, they must be very tired.