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 :)
Ozone would be the secondary pollutant because it is caused when two primary pollutants react. Hope this helps!
Answer:
False
Explanation:
Mark as brainliest Please ^_^
Answer: i answered the first one you posted go check
Explanation:
B. 1900 United States between 1870 and 1900. I hope this helps(:
