The magnetic readings taken across mid-ocean ridges provide evidence that "the sea-floor is spreading".
<u>Option: A</u>
<u>Explanation:</u>
As researchers analyzed trends in the ocean floor rocks, they noticed further encouragement for expanding the seafloor. Previously we read that Earth is behaving like a giant magnet, with a north pole and a south pole. Remarkably, throughout the Earth's past, Earth's magnetic poles flipped themselves several times.
The last turnaround occurred nearly 780,000 years ago. If the magnetic poles now unexpectedly flipped, one would find its compass needle pointing south. Researchers have found that the rock forming the ocean floor contain iron and thus resides in a form of magnetized stripes.
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.
Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
DNA replication needs to occur because existing cells divide to produce new cells. Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions.
With out DNA replication no individual can survive.
I can maybe answer it if you give me more details
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Lipids tend to form fatty acids.
