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

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.