Question

SARS is a respiratory infection which is caused by X' whereas bird flu is caused by Here x and Yare, respectively
1.H5N1 virus and retro virus
2.H5N1 virus and RNA virus
3.Retra virus and H5N1 virus
4.DNA virus and retro virus,​

Answer 1

Answer:

SARS is a respiratory infection which is caused by X' whereas bird flu is caused by Here x and Yare, respectively

1.H5N1 virus and retro virus

2.H5N1 virus and RNA virus

3.Retra virus and H5N1 virus

4.DNA virus and retro virus,​

Explanation:

Answer 2

are you a aakashian?? which class

Explanation:

answer is option 3 as retra virus cause lung disorders