What is the author's main purpose in the text? A:to emphasize how math can expose how little we know about the universe

B: to show the importance of numbers in exploring space and potential alien life

C: to reveal why scientists have failed to find alien life using math

D: to prove that math is the foundation of our world and other potential worlds

the answers are

c and c

answer: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.