Which of these earth events was dated using the most valid and reliable source of
information?
1) millipede appears
2) land mammals appear
3) rodents appear
4) insects appear

Which of these fragmental sedimentary rocks would most likely form farthest from the land?

Which of the following is not a reason why shenzhen, china, is considered an emerging global city

What can happen to solar radiation when it enters earth’s atmosphere? check all that apply. it is absorbed by earth. it is reflected by clouds. it is reflected by glacial ice. it is condensed into visible light. it is amplified by water molecules.