They color because they are both acidic when you mix an antacid with an acid the color changes
The great plains population and environment project examines the recursive relationship between human impacts and environmental hazards that draw and repel population and effect the family structures of migrants.
I believe the answer is C.
This is because radiation is emitted. It does not need to be channeled or conducted. So, for this reason, I believe heat from radiation also does not need any matter to conduct it.
Hope this helped. Have a great day!
Don’t trust the link it can sometimes lead to bad things