What causes differences in air pressure around the Earth? warm air rises at the equator and cold air sinks at the poles
warm air sinks at the equator and cold air rises at the poles
warm air rises at the equator and cold air rises at the poles
cold air rises at the equator and cold air sinks at the poles

Warm air rises at the equator and cold air sinks at the poles.

hello,

answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

best of luck!

if you have to make a general question and respond to your thoughts, then this isn't really a question someone can you on. read the passage, form your question, and answer using your thoughts. no one else can understand how you interpreted this text if you don't tell us.