Answer:
Not likely to be one that high.
Explanation:
A 7 only every 3,400 years so not likely.
Answer:
Hey there!
I believe that David's prediction would be: If the amount of pollutants in the atmosphere reached an amount unhealthy for the salamanders, then the salamander population would decrease.
Let me know if this helps :)
D is ans becauseit convert
Explanation:
convert nitrogen gas in the atmosphere to ammonia. Nitrifying bacteria convert ammonia to nitrites or nitrates.