Two similar species of fish live in the same lake. a biologist observes that one fish population is much larger than the other. the biologist believes that the difference is due to better protective coloration in the larger population. a research project is set up to test this idea. the biologist's idea that the population numbers are influenced by coloration is called a(n) a. opinion. b. hypothesis. c. conclusion. d. observation.

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.

What organs comprise the respiratory system of a bird

Kudzu vines grow by climbing and wrapping around trees. trees covered by kudzu can die because they are starved of sunlight. what type of relationship exists between the trees and the kudzu growing on them?