Pioneer species are species which colonize previously uncolonized land, usually leading to ecological succession. They are the first organisms to start the chain of events leading to a livable biosphere or ecosystem. Why is a lichen most likely to be a pioneer species?
A The mutualistic relationship of species forming a lichen allows it to survive independently.
B The lichen is fast growing and provides a nutritious food source for many other species.
C The lichen does not require sunlight to survive.
D The lichen is a decomposer that digests rocks and forms soil.​
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In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?
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Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?
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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.
Answers: 3
Pioneer species are species which colonize previously uncolonized land, usually leading to ecologica...
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