D.) black text on a yellow background. There is much more contrast in the colors black and yellow than the other choices.
This is the correct answer please mark me as brainliest
The given above pretty much states already that with the presence of the calcium carbonate which acts as the buffer will allow the solution to withstand changes in acidity. The greater the amount, the higher chances that it will be able to withstand the said changes. Therefore, if Lake X had greater ppm of CaCO3 then, it will be able to withstand greater amount of acid rain.
Answer: Calories
Explanation: One calorie is the amount of energy required to raise one gram of water one degree Celsius
