LOOK AT THE IMAGE PROVIDED TO ANSWER THE FOLLOWING QUESTION. Choose one correct answer! Which of the following is true about the pH and the concentration of H₃O⁺ in coffee?
2 points
A. The concentration is exactly the same as the pH
B. The value of the exponent on the concentration is the same as the pH
C. The pH value is not related to the concentrations of the ions

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.