Answer: C. Medulla and Cortex
The nephrons are found at the cortex-medulla junction. There are what we call as the juxtamedullary nephrons and cortical nephrons referring to their designated locations. The juxtamedullary nephrons are involved in the creation of concentrated urine of a person.
The statement which best explains why carbon is present in so many kinds of molecules is because <u>it can form four covalent bonds.
<em /></u>It isn't rare on Earth, so A is incorrect. It has valence electrons, so C is incorrect. It cannot become an ion, so D is incorrect.<u>
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It was the type of diversity that had to do with the niche depending on which niche you are is the amount of varaiaton in your gene pool
Answer - A
Semi-conservative model of replication involves the replication of DNA in all the familiar cells in such a way that each newly synthesized daughter cell contains a double helix with one new strand and one old strand.
