Answer:
is very valuable because it is our future and if we dont
care about how we live we will suffer greatly .
Explanation:
Something may irritate it and the reaction the eye has is that it burns. Let's say something got in it, then it burns because something is touching the eye that irritates it and it burns.
Answer:
The revision of the passage that best connects ideas and adds variety is - Running is inexpensive, yet you can run on a treadmill. You can run outdoors, however, you should not run on icy roads.
Explanation:
The sentences given are short and simple. But when it comes to fusing the meaning and making it sound better, linking words are used. Here, using the words "yet" and "however" all the short sentences are joined to form one sentence which sounds well and offers the correct meaning at the same time. The flow of the sentence is better. There is less amount of jarring and stopping which helps it to connect ideas and add variety to the joined sentences.
The answer is HIV. Hiv or human immunodeficiency is a virus that can weaken the body's immune system. Infection with HIV causes a life-threatening illness called AIDS also as immunodeficiency syndrome.