Scientists theorize that all life started with simple prokaryotic organisms. New species continue to evolve from existing species, creating the variety of life we see today. The following diagram shows the basic process. Based on this diagram, do you think that organisms of the same order will share a stronger evolutionary relationship than organisms that share only the same phylum? Explain your reasoning using the results of your investigation.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's