What is the major area of research in Antarctica today? biodiversity

climate change

human demographics

solar energy

ahaha 8

my answer has to be at least 20 characters so here are the rest of the characters lol

hi there!

question - how does mountainous terrain affect settlements in a region? choose all answers that are correct.

groups trade with each other regularly.

people travel from settlement to settlement.

why: since they travel to go trade or visit it may be harder to get there because of the mountainous terrain.

hope this : )

answer; ///(true)/// fusion occurs in the sun's core;

answerpeople organize large projects such as levee-building;