Practice 5: Select each item that can be used as evidence showing that the Earth is changing over time A. Erosion caused by glaciers
B. Matching rock types and fossils found on coasts of both South America and Africa
C. Mapping data from NASA satellites
D. Measuring earthquakes and volcanoes around the globe and showing the changes in the nearb
E. Layers of exposed rock identifying them as different types of rock
F. K-Pg boundary indicating a mass extinction in the rock
G. Fossils of shark teeth inland in Florida

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions, because prokaryotes don't have nuclei.

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

All phases of matter may have a fixed mass