Help me ASAP times tests A light signal is sent from Earth toward Mars. The signal is reflected off Mars and detected back on Earth soc minutes later. What measurement can be calculated from this experiment?
A the distance from Earth to Mars
Bthe time required for Mars to orbit the Sun
Cthe velocity at which Earth travels past Mars
D the velocity at which Mara travels around the sun

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.