Prior to the ideas presented by charles darwin concerning evolution, several alternating theories had been developed. they included all but a) all species on earth were created at the same time and have never changed. b) the dna differences within a species lead to some individuals being better able to survive. c) new animals were simply made from the different parts of animals that were living at the time. eliminate d) an organism can acquire characteristics during their lifetime and then pass these onto future generations.

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 have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. b. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. c. prokaryotic poly-a tails have other functions, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails.

One of the methods used to reduce energy use is: a. energy efficiency c. energy conservation b. energy reservation d. energy holding select the best answer from the choices provided a b c d i know the answer is not option a

There are six elements that make up most of the human body. which of the following is not one of these six elements?