What evidence is there to suggest that the earth is composed of tectonic plates?

List of evidence:

1. The age and distribution of ocean sediments: the sediment in the ocean is thinner and younger than the age of the ocean indicates it should be.

2. The oceanic ridges: oceanic ridges are clear indicators of past events.

3. Terranes: oceanic plateaus that form by uplifting and mountain building as they strike a continent

4. Paleomagnetism: strips of alternating magnetic polarity at spreading regions.

5. The location of the mountains and Fossils, resemble continents, like the ancient mountains ( although many have eroded to their cores ) and location of the rock types and fossils, all of it match up.  With the fossil, tropical species found in the Antartic and similar fossils found in western Africa and Eastern South America.

6. Apparent polar wandering: plate movement caused the apparent position of the magnetic poles to have shifted  

7. Earthquakes and Volcanoes, if you check the map location of all the earthquakes recorded over time, almost all of them occur in plate boundaries. Hot spots: surface expression of plumes of magma

A volcanic island chain can form when a plate passes over a hot spot and a stationary mantle plume

8. Atolls and Guyots: coral formations and submerged volcanic mountains. Guyots were once volcanic peaks above sea level

option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.