<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>
Answer:
finds the cows with a lump on his neck
Bacteria is used to produce human insulin
For the set of number of subatomic particles given, we determine if it represents an ion if the number of protons and electrons are different. From the choices, only the 2nd choice has different number of electrons and protons. Further, that represent a negative ion as there are more electrons than protons. All the rest of the choices do not satisfy the conditions.