instruction:
In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
question:
Question: Sandra sees a huge glacier, and notes that it has smaller tributary glaciers flowing into it, in valleys that are 
 Answer: shallow
answer:
Smaller tributary glaciers, like tributary streams, flow into the main glacier in their own shallower U-shaped valleys.


question:
Question: Carbon dioxide levels increasing cause the temperature to 
 Answer: increase
answer:
An increase in greenhouse gases leads to greater greenhouse effect.


question:
Question: Would Jim's solution become more or less acidic if he decreased the concentration of hydrogen atoms in it? 
 Answer: less acidic
answer:

With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.