Answer:
Particular focus on a person's life
I think the answer is B.
Because one of the factors that has prevented it from being a more unified country is its geography. It's rugged, mountainous. It's very difficult for any invading army to develop or control it.
The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) trap energy from the sun. Normal warming is mostly caused by natural gases.
The us has way more things to help fight such as medicines
Answer:
1: A 2: 1,3
Explanation:
Alfred wegner had gained an idea from this and later turned it to a theory
And it's one and three because he had used mutiple different fossils and species from different continents that were the same thing in two different places and shown the glacier marks on seperate continents not naturally having glaciers.