I believe the answer is a because the were the first organisms to colonize bare rock.
<span>A theory is replaced rather than revised when the fundamental assertions or ideas behind the theory are proved to be incorrect. When a theory is replaced it is called superceded or obsolete (but only if it was once accepted by the scientific community at large - fringe theories remain fringe theories). One example is Lamarckism in evolutionary theory which was succeeded by Mendel’s ideas of genetics and Darwin’s theory of evolution.</span>
The answer is...
<u>Closed</u> ecosystems do not experience any new input or output of energy and/or material.
I hope this helps! :)
Answer:
B--Organism
Explanation:
Different levels of biological organization start from the least complex object and end at the most complex. Every object has objects preceding it that it is made up of.
In this question, the organ system is made up of several organs. A community is made up of several populations of different people. Think about this now: what makes up a population and is made up of organ systems? The most logical answer here according to the flow is B--an organism. An organism is made up of organ systems and makes up a population, which in turn allows several populations to make up a community.
Answer: 686
Explanation:
im guessing 686 because 2 times 343 is 686 :) hope thats what your looking for