Answer:
If it is a gene mutation then it is during the S phase, and if it is a chromosome mutation, then during metaphase or anaphase.
Explanation:
Answer:
Because flu viruses evolve so quickly, last year's vaccine may not protect you from this year's viruses. New flu vaccines are released every year to keep up with rapidly adapting flu viruses.
Answer:
I think its the first one The penny absorbs the light as it enters the cup.
Explanation:
I hope this helps u! :D
It is water pollution, since you are polluting the river.
Hope I helped!
