Something SHY

We know how copulation can result in pregnancy. However, in modern day society, many people are not only seeking for their pursuits and also the increasing cost of child raising in developing countries. As a result, birth control methods are introduced.There are 2 types of birth control methods, the temporary birth control and the permanent birth control. For temporary birth control, once its removed, a couple can get pregnant again. However, permanent birth control is irreversible. Such examples are vasectomy and tubal ligation. Vasectomy is the cutting and tying up of the sperm ducts to prevent sperms being ejaculated from the epididymis. Tubal ligation is the cutting and tying up of the fallopian tubes. In this way, no ovum can reach the uterus for implantation and no sperm can reach the ovum. The temporary methods includes rhythm, condom, withdrawal, Pill, diaphragm, IUD. Just to name a few. Being the most common, the condom. It is latex fitted over the penis of the man to hold the sperms after ejaculation. The diaphragm also acts in the same way, but being fitted on the cervix by a doctor. The IUD, being much rarer is "The intrauterine device (IUD) is a form of birth control; it is an object, placed in the uterus, to prevent pregnancy.[1] Among modern IUDs, the two types available are copper-containing devices, and a hormone-containing device that releases a progestogen." From WIKI.

Some expectations for Term 3

With the start of the new term tmr, I am looking forward the the science lesson. It's going to be whole new topic on biology, with a tinge of physice which I hope I can manage well this time. Again, I have set my target for my science test to be at 37 and or above. I have also devised a plan where I will revise the lessons learnt after each science lesson lesson! Hope this helps, The next time I post will be the results and reflections. Work Hard :)

CARBON CYCLE

Actually I've always believed that carbon, which can also exists as carbon dioxide is bad for the environment. Yes, its true but after my self-learning through ecology(P.S I did this during the hols), the carbon cycle is THE ROOT TO ALL LIFE. This simple cycle ensures that carbon dioxide in the air is always kept constant, not too much, nor too little. During photosynthesis, plants take in carbon dioxide and give out oxygen. The carbon dioxide is turned into complex materials such as sugars, amino acids and stores energy. When the plant is eaten by the autotrophs on the next tropic level, the energy stored in the carbon is passed on to it. The autotrophs releases carbon back to the atmosphere when they are respiring. The feces and animal waste also contains the ingested carbon. Decomposer such as fungi and bacteria feed on them. When the bacteria and fungi respires, carbon dioxide is again released into the atmosphere. When organisms die, decomposition occurs and the same process goes on. By chance, the dead organisms can become fossil fuels or coals. They store tremendous amounts of carbon energy and it is released via combustion. Large amounts of carbon dioxide are released back into the atmosphere. Luckily, the plants take in more carbon dioxide compared to its intake of oxygen and this prevents the level of carbon from getting to high. THE 3 PROCESS THAT IS ESSENTIAL FOR RELEASE OF CARBON IS RESPIRATION, COMBUSTION and DECOMPOSITION. The carbon cycle is important as it transfers energy from one organisms to another as energy are locked up in the carbon. It also ensures that there is enough carbon dioxide in the air for the plants to photosynthesis and ensures that ecosystem, food chain and webs are disrupted. YAY! So next time you are respiring, remember that U are part of the cycle TOO!