Some rivers and seaports in Russia can freeze for six to nine months out of the year. Predict how this could affect trade and travel in Russia and how Russians may try to overcome this obstacle. pls help me!! ☀︎︎

Which of the following is true about fossils? a. the relative age of fossils cannot be determined from their position in sedimentary layers. b. fossils found in lower layers of sedimentary rock are as old as fossils found in upper layers of sedimentary rock. c. fossils found in upper layers of sedimentary rock are older than fossils found in lower layers of sedimentary rock. d. fossils found in lower layers of sedimentary rock are older than fossils found in upper layers of sedimentary rock.

The organ that has two atria and one ventricle is the

What happens if you look at the sun through a magnifying glass? would it be any worse than just looking at the