Answer:
High-altitude locations are typically abundant colder than areas nearer to water level. this is often because of the low atmospheric pressure. Air expands because it rises, and therefore the fewer gas molecules—including atomic number 7, oxygen, and carbon dioxide—have fewer possibilities to come across one another. The frame reacts to high altitudes.
That awnser for that would be 10
Whoch birds are migrating is my answer because, for a the birds are migrating because its winter for c birds are already going since one of the questions are where the birds are going, and d is that they are going there to not freeze, the only logical choice FOR ME is B