In a food chain including plants, goats and human, which will be most affected by biomagnification?

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

What happens when a scientific theory is shown to be an accurate description of a phenomenon?