Presenting Your Opinion

Since: Since the developing countries have adopted technology in their agriculture sector, their yearly productions have increased significantly.
Because: Another group of people attend a night school because they work at the day time.
As: As mothers mostly stay home, they have a greater responsibility in upbringing children.
Due to: Due to the widespread corruption in these less developed countries, the fund should be directly handled and utilised by the authority of the developed countries.
Owing to: (means because of/ on account of).
The new factory would have many negative effects and would destroy the serenity of our community owing to its location in the middle of our area.

Adding Information:

Additionally: Additionally, computer games are addictive and can waste a large portion of the valuable time of a school-going child.
Moreover: Moreover, young people have better technological knowledge than the older generation.
In addition: In addition to that, fast food contains the fat, preservative, and other harmful ingredients which are very detrimental to our health.
Furthermore: Furthermore, helping developing countries in terms of providing education facilities, can strengthen the relationship between two countries. 
And: And the negative impacts of establishing a large factory in our community would trigger other adverse consequences which would be hard to tackle in the long run.
Not only... but also: Not only deforestation damages the natural habitats of many species but also is the main reason for global warming.
Also: Also, cities provide better job opportunities and a better-living standard.
As well as: Too much dependency on technological devices as well as the internet would bring catastrophic consequences once something goes wrong.

Results and Consequences: 

As a result: As a result, lessons learned from our experiences have better effects in our life.