Alina has cold and viral flu for the past 5 days. Her mother gave her antibiotics but she is not recovering. What can be a likely reason for the same?
(a) Antibiotics are used against viral infections.
(b) Antibiotics are used against bacterial infections.
(c) Antibiotics take time to cure the infection.
(d) Antibiotics are to prevent infection rather than to cure them.

I think it's because antibiotics are used against bacterial infections,but from the question above it seems like Alina has a viral infection like stated a viral flu.

I hope this helps

About 78% of the Earth's atmosphere is made up of "free" nitrogen (N2), produced by biological and chemical processes within the biosphere and not combined with other elements. ... One family of nitrogen compounds produced by nitrogen - fixing bacteria are called nitrates.

Explanation:

Hope this helps