What is the smallest living thing in the following list: frog embryo, mitochondrion, prokaryote, virus, atom?

Prokaryote.

Explanation:

Prokaryotes are known as the smallest living thing, and bacteria are the best example of prokaryotes. Due to the absence of an internal membrane, these organisms lack a true nucleus and other organelles.

The smallest organism that is present on earth can be identified by their size, volume, mass, weight, and genome size, etc. Mycoplasma is known as the smallest prokaryotic organism on earth which is 0.15-0.35 micrometer in size.

the bedroo..

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.