Wednesday, September 28, 2011

Impact of The Food Chain!

Hey guys!

        Have you ever thought of the food chain before? Basically, the food chain consists of many different food webs that are connected with each other. It has many levels, starting with:

Autotrophic Level: This is the producers section, the starting point of the food chain, excluding the sun. This level is mainly green plants and trees, anything that can carry out photosynthesis* and cellular respiration*.

Photosynthesis is the process in which plants absorb sunlight and use it to make food for itself.
Cellular respiration is, to put it simply, the process where plants take the energy and nutrients from the food it made and use it towards other processes.


Primary Consumer: Then we get to the primary consumers. These types of consumers are herbivorous, meaning they eat only plants. So primary consumers eat organisms from the trophic level to obtain energy.


Secondary Consumer: This type of consumer is called carnivorous, which is basically an organism that eats  primary consumers or other animals to obtain energy. Carnivorous species cannot eat plants for food. For example, a tiger (secondary consumer) eats zebras (primary consumer) for energy.


Tertiary Consumer: Then we finally reach the point where humans are involved. Tertiary consumers are consumers that are omnivorous, which means we can eat both plants and other animals. An example would, of course, be humans.
(If you have a mirror, look at one, and you will see a very cool human :)

The sun is what starts and keeps this cycle going, believe it or not. Without sunlight, photosynthesis couldn't be carried out by the autotrophic level, and if that's not there, then there would be no primary consumer, and if that's not there...well, you get the picture.

That's just a brief description of the food chain, hope you guys enjoyed it!

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Tuesday, September 6, 2011

How Hurricanes Are Formed!

Hey guys!

      I'm sure most of you following this blog know about hurricane Irene. It wasn't as bad as hurricane Katrina, but it certainly did do a lot of  damage, tearing up trees, even causing a few deaths. A lot of you might be wondering, how are hurricane formed?

      Basically, hurricanes are formed when warm moist air from the ocean start rising up from the water to the sky, leaving less air near the water, thus creating a low air pressure gradient near the water surface. The air cools as it rises, and it can't hold all the moisture it contains. The water then condenses out of the air, which is a natural way for water to produce heat. That heat fuels the winds that start to pick up to faster and faster speeds, feeding of more warm moist air to go even faster. That is what triggers and starts hurricanes, but as soon as it comes to a point where it reaches cold water areas or land, the hurricane starts losing the wind speed because of the lack of the warm air.

Fun Fact: For a hurricane to be official, it needs to have the wind speed of 119 km/h (74 miles an hour)