This key structure is used to show the comparison involving multiple things, regarding their similarities and differences.

This key structure is used basically to give a specific or detailed description of something, to make the reader have a clear picture in mind.

This key structure is used to present the connections between particular event, idea, or concept and the events, ideas, or concepts that follow.

This key structure is used to describe the problem, explains the solutions, and then discuss the effects of the solution.

The history of generations of computers gone in several decades. The First Generation began in 1940 to1956, where the computers used vacuum tubes as circuitry and magnetic drums for memory. Second Generation happened during 1956 to 1963, vacuum tubes changed to transistors. On the Third Generation dated on 1964 to1971, transistors became integrated circuits that enabled machines to run several applications. Followed the Fourth Generation which marked on 1972 to 2010, when the revolution of microprocessors such as Intel began. Finally, the Fifth Generation came at 2010, this period computer devices used the artificial intelligence.

Bataan is a place rich in historical and beautiful sites that you may visit. Here you can find and explore: the rocky island of Corregidor, located at the entrance of Manila Bay, that remembers the battle fought of American and Filipino soldiers over Japanese; the natural beauty and mangrove trail of Balanga Wetland and Nature Park; the Dambana of Kagitingan on its famous steel-made memorial cross and sculptures of heroes on its foot; the gigantic Sword of Pilar, Bataan that symbolizes bravery of the Filipino and American soldiers; and, the Bataan World War II Museum where you can find old memorabilia’s of war and the creepy torture chamber.

Water pollution happened because of the different man-made activities. Toxic waste materials from factories and homes where flashes and dissolved into bodies of water. This leads to several effects such as, different water-borne diseases, destruction of the ecosystem in bodies of water, algal bloom, and disruption of food chain underwater.

Coronavirus disease is an illness that is highly infectious that easy to spread out. To resolve this, the government employed several ways to control the spreading of Covid through travel restrictions, lock-down of different affected areas, practicing social distance, proper handwashing, and wearing of a mask.

Part of our life is going to the supermarket to buy our needs. And doing this, we usually use bags whether it is paper or plastic. In which they have the same usage, to hold the things that we bought. But thinking of which is really environment-friendly, makes us confuse. Plastic bag is not biodegradable while paper bag easily to decompose, hence, the thing that easy to decompose is better. On the contrary, plastic bag can be used many times, but paper bags cannot because it is easy to tear, thus, plastic bag is more reusable than paper bag.