What are the agents of physical weathering

Asap! ! ! western china, northern china and southeastern mongolia are all located in what climate zone? tropical wetdesert humid subtropical humid continental

One of the main reasons societies settled along rivers in the neolithic era was because a) the village elders demanded it. b) the land there was more valuable. c) it was more safe and secure there. d) it provided irrigation for farming.

Which of the following can scientists estimate geologic time? a.observing rock sequences b.radiometric dating c.comparing fossils d.all of these