Which best describes how dna is used as a molecular clock?
the number of mutations in dna is compared between two species.
the total amount of dna is compared between two species.
the percent of carbon in dna is compared between parent and offspring.< the total mass of dna is compared between parent and offspring.

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

1which body contains the majority of the mass in the solar system earth jupiter the moon the sun 2 what keeps the objects in the solar system such as planets orbiting around the sun the force of gravity the galaxy exerts on all objects within it including the solar system the great distance between the sun and the planets the sun's nuclear fusion which acts on each object the gravitational force between the sun and each object in the solar system

Five renewable energy resources are wind, sunlight, moving water and geothermal energy. question 2 options: true false