Answer:
Either A or B
Explanation:
It really depends what kind of speech but your best bet is A if its a politician making a speech and B if it's a teacher/professor.
The answer is A, hope this helps!
I guess it would be easier for us to define the disadvanatges if you tell us about the technologies you want to mention. For example, it is hard to think of technology and nature together but even advances like Artificial Intelligence (AI) that could not be further removed from the natural world are helping conservation efforts. Well, at least I tried to answer your question. More help you can get if you check the tips at Prime Writings site. Good luck with it!
Tap? Have you ever thought about how dean the water is that comes from the something must be done to make it clean and pure. Here is something you can Since there cannot be pure fresh streams everywhere to supply clean water learn about cleaning dirty water. First, you get a funnel that you used before and slowly into the funnel. Then collect the water as it drips through into another jar and line it with clean white blotting paper. Next, get some muddy water and pout it continue doing this until you have about half the muddy water. After this, observe the blotting-paper lining the funnel and you will see how it has held back some of the dirt from the muddy water. Finally, you will see how much cleaner the water is. You have made a filter to separate the dirt from the water and left the water cleaner