1. Think about what you know about fossils. Using this knowledge, how do you think fossil fuels were formed?
A. Trees were cut down and heated.
B. Ancient plants and animals changed over time.
C. Rocks were broken down by wind and water.
D. Layers of sediment piled up and hardened.

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.

The importance of the mind as a part of the body is an example of:

What are positive impacts of algae? how is it used?