Answer:
Extinction
Explanation:
Extinction stands for coming to an end or dying out
Answer:
In biology, cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells. ... Cell theory was eventually formulated in 1839.
Answer:A
Explanation:I took the test just now and that was the correct answer, goodluck :)
<span>The calyces.
Renal pyramids are simple constructions of nephrons that exist within the kidneys. Renal tubules are don't deal with the collection of urine. And juxtamedullary nephrons process and act in the formation of urine.</span>