All living cells and many of the tiny organelles internal
to cells are bounded by thin membranes. These membranes are composed
primarily of phospholipids and proteins and are typically described as
phospholipid bi-layers.
<span>Hope I helped. :) </span>
RNA has great capability as a genetic molecule; it once had to carry on hereditary processes on its own. It now seems certain that RNA was the first molecule of heredity, so it evolved all the essential methods for storing and expressing genetic information before DNA came onto the scene.
I think homologous structures is a great example and idea that supports the theory of evolution. Homologous structures shows us how our futures evolved by natural selection.
I think it’s D bc it’s talkin about fossil fuels
they contain half of a set of chromosome...that's jot true
