Explain two causes of the short-term variation in the heat budget of the earth.

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.

What acceleration is produced when a 3,000-n force acts on a 1,200-kg car? ignore the friction

If the basis of an isosceles trapezoid have lengths of 11 and 26, what is the length of the median?