Scientific investigations are often conducted in order to design solutions to real world problems. For example, scientists often study the pH of lakes and other bodies of water because many organisms in the lakes can live in only a narrow pH range. If a lake became too acidic, which of the following describes the best way that scientists could determine how to make the lake more neutral?

the index of refraction of the second medium is higher. i just took the test trust me !

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )