Linggo, Setyembre 4, 2011

Importance of Coral Reefs and Mangroves

1st lets talk about coral reefs, when we say coral reefs what comes into our mind? mostly of us think of it as a rock in the sea in the sea but the fact is coral reefs are colonies of tiny living animals found in marine waters that contain few nutrients. Most coral reefs are built from stony corals, which in turn consist of polyps that cluster in groups. The polyps are like tiny sea anemones, to which they are closely related. But unlike sea anemones, coral polyps secrete hard carbonate exoskeleton which support and protect their bodies. Reefs grow best in warm, shallow, clear, sunny and agitated waters. coral reefs are important not only biologically rich and a source of beauty but they also provide many services. When coral reefs are degraded, destroyed or bleached, those services will be impacted. Some of the services that coral reefs provide are preventing big waves to hit the seashores, tourist attraction, home for small fishes and many more.. We should help our society protects our coral reefs because Coral reefs have been used in the treatment of cancer, HIV, cardiovascular diseases, ulcers, and other ailments. At least 500 million people rely on coral reefs for food, coastal protection, and livelihoods. Coral reefs are among the oldest ecosystems on Earth.But as far as we know Estimates are that 20% of the world’s coral reefs have been effectively destroyed in the last few decades and an additional 20% or more are severely degraded, particularly in the Caribbean Sea and Southeast Asia.

Now lets talk about Mangroves. Mangroves are various kinds of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics.Mangroves is just like coral reefs when we talk about there services that they have made in the society. But the only difference is that corals are tiny living animals while mangroves are various kinds of trees. Mangroves protect shorelines from damaging storm and hurricane winds, waves, and floods. Mangroves also help prevent erosion by stabilizing sediments with their tangled root systems. They maintain water quality and clarity, filtering pollutants and trapping sediments originating from land. Mangroves also serve as nursery areas for animals like shrimp, crustaceans, mollusks, and fishes. Mangroves also provide support for threatened and endangered species. the threatened species includes American alligator, green sea turtle and loggerhead sea turtle while the endangered species includes American crocodile, hawks bill sea turtle, eastern indigo snake, southern bald eagle, peregrine falcon, brown pelican and many more.. In other parts of the world, people have utilized mangrove trees as a renewable resource. Harvested for durable, water-resistant wood, mangroves have been used in building houses, boats, pilings, and furniture. The wood of the black mangrove and buttonwood trees has also been utilized in the production of charcoal. Tannins and other dyes are extracted from mangrove bark. Leaves have been used in tea, medicine, livestock feed, and as a substitute for tobacco for smoking. In Florida, beekeepers have set up their hives close to mangroves in order to use the nectar in honey production.

In Generallization:
     We Should Help Our Environment In Our Own Little Way So That We Can Help Our Mother Earth Restore Its Beauty and To Preserve Everything That We Still Have Now Before Its To Late!

Linggo, Hulyo 31, 2011

The Hydrosphere

As far as we all know, the Earth that we live on is the 3rd planet on the solar system and it is the only planet that is able to support life.  Earth is just the right distance from the sun to have temperatures that are suitable for life to exist. Our planet also has water on its surface, which is something very unique. In fact, Earth is often called the 'Blue Planet' because most of it is covered in water. This water is made up of freshwater in rivers and lakes, the saltwater of the oceans and estuaries, groundwater and water vapour. Together, all these water bodies are called the hydrosphere.
The Hydrosphere or water is an important factor in our daily life because, when water is heated it evaporates and forms water vapour. When water vapour cools again, it condenses to form liquid water which eventually returns to the surface by precipitation like rain or snow. This cycle of water moving through the atmosphere and the energy changes that accompany it, is what drives weather patterns on earth and land plants absorb water through their roots and then transport this through their trunk, stems and leaves. This water is needed in photosynthesis, the food production process in plants. The large amount of water on our planet is something quite unique. In fact, about 71% of the earth is covered by water. Of this, almost 97% is found in the oceans as saltwater, about 2.2% occurs as a solid in ice sheets, while the remaining amount is available as freshwater. So from a human perspective, despite the vast amount of water on the planet, only a very small amount is actually available for human consumption or drinking or what so ever. Water is a part of living cells
Each cell in a living organism is made up of almost 75% water, and this allows the cell to function normally. In fact, most of the chemical reactions that occur in life, involve substances that are dissolved in water. Without water, cells would not be able to carry out their normal functions and life could not exist. Humans use water in a number of ways. Drinking water is obviously very important, but water is also used domestically like washing dishes, cleaning, etc. and in industry. Water can also be used to generate electricity through hydropower like what we can found now in Maria Christina Falls. Water have also a bad effects in our society because it can cause damage and it can also kill people like floods and tsunami.

 
The Hydrosphere is also an important part of weathering beacause it helps to break rock down into rock fragments and then soil and soil is the place where we live on and plant trees. That's why without water I can only say that we are not in this world now!

Let's start conserving water now and try to appreciate the things that we can found in our surroundings because every little thing that we can found in our environment is indeed in fact depends on water specially people, animals and plants.

Linggo, Hulyo 3, 2011

Advantages and Disadvantages of Science and Technology

The Science and Technology have great effects in our society.



Globalization is such a commonly used term in the twentieth century. It simply means that the world has become affected economically, socially, politically and culturally through the advances of technology, transportation and communication. We cannot deny the facts that Science and Technology have positive and negative effects in our Society.
To begin with, globalization has contributed to the world's economies in many beneficial ways. The Advances in science and technology are allowed businesses to easily cross over territorial boundary lines, makes our life easier, it helps us organize our daily activities, our job can be done faster, easier to communicate other people in other places in just a second, helps us to understand other culture and society better and lots more and the Disadvantages of Science and Technology are can be easily manipulated by irresponsible persons, we'll be too independent in technology and without it we will fell hopeless, it affects our health and lifestyles, sometimes people can easily invade our privacy like hacking the systems and many more. The vast improvements made in the field of medicine have served to lengthen our life expectancy and to reduce the rate of infant mortality. The discovery of mechanization, in transportation, trains, planes and motor vehicle makes us easily go to other places easily. The invention of computers has assisted the process of calculation in laboratories but science has been responsible for pollution and has given us the nuclear bomb which threatens our very existence like what happened in nagasaki and hiroshima in world war 2. But what i can say is that the science is not the fault of all of that but what are the people's intention to use science in their bad motivation in their lives. In generalization, as far as what I learned or I should say as far as what I know Science and Technology have great affects in our society and community like advantages and disadvantages of our society but it can only occur when a person using it use it in good purposes or bad purposes. Just always remember that we people have the responsibilities in our own society and community.