Answer:
taking data from a population rather than a specific group of people to gather information from
(random and most representative on a large scale of people)
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.
D. along rivers and streams
The largest country there is Saudi Arabia