Molecular clock. a. take advantage of the fat that all mutations effect the fitness of the organism. b. take advantage of the known mutation rates to estimate how long ago organisms shared a common ancester . or d take advantage of the fat that only nutrional mutations do not happen at a steady rate

it’s lava came from an explosive eruption

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.

answer; the code in musculoskeletal system subsection is associated with deep tissue possibly to the bone;