When someone is HIV positive it is their immune system is deficient this can lead to AIDS or other serious infections
I'd say A: tidal waves. B, C, and D don't really seem to fit for me.
The answer is to this question is c.
hope this helps
I do think that they close to not allow too much of either water or air from entering.
the hollow tube allows water to flow easily.
https://www.bbc.co.uk/bitesize/guides/z28g7p3/revision/1
Explanation:
Chromosome 11 is made of over 130 million base pairs.
Approximately how many genes are found on chromosome 11? 2000
