A. Iron-titanium oxide helps preserve the direction of magnetic fields
The nucleus IS within the plasma membrane of the cell. It does have its own membrane, though. For a plant cell and <em>very</em> few animal cells, however, they have a <em>cell wall</em>, which is NOT within the confines of the plasma membrane.
point, shift deletion, UV rays, radiations, genetics mutations, gene editing
That is just some method that gene can change within the DNA
Clastic sedimentary rocks: The word clastic came from “clasts” which means grains. Mainly silicic rocks like sandstone, shale etc. fall under clastic rocks. Organic sedimentary rocks: Sedimentary rockswhich are formed due to biogenic activity/processes or form fromorganic matter are called organic sedimentary rocks.