A solution has a hydronium ion [H+] concentration of 6.5 x 10-4 M. What is the pH? A.0.10
B.4.8
C.2.5
D. 3.2

The answer is letter c

Conservation efforts have been effective in "increasing the number of endangered species, reducing all the negative impacts of human activity, and preserving wildlife habitats".hope my answer has you : ) 

Answer( precipitate );