Earth science affects our daily life so many ways. ... Our very lives are shaped by it. We take summer breaks when it's sunniest, we live through hot and cold, dry and wet, and every combination of weather. We are a prey to it storm, droughts, earthquakes, hurricanes, volcanoes all the earth's process.
Answer: (A) Surveys are generally cheaper to conduct.
Explanation:
Both surveys and experiments are valid means to scientifically establish data about groups of people and how the way specific variables influence them. A survey examines the way a variable we have no control over has affected, for example, a group of people. In an experiment, one of the variables is manipulated while the other one is measured.
Surveys are comparatively inexpensive, especially if they are online surveys, and even if incentives are provided to participants.
Answer:
B. Unification of the empire
Explanation:
I would pick B. because, in order to have an empire, you need all three of those. D makes no sense because you can't really put those two together. A doesn't really connect either. The only relation is that they have a powerful army.
Hope I helped :)