What R The Different Levels Of Cube Runner Astronomy Help Please 10 Easy Points?!?!!?!?!?!?

Astronomy help please 10 easy points?!?!!?!?!?!? - what r the different levels of cube runner

1. What is the main source of heat responsible for the geologic activity in the long run?
a. Accretion
b. Radioactivity
c. Sunlight

2. Which of the following basic characteristics have the greatest impact on the level of volcanic and tectonic activity?
a. mass
b. Radio
c. Distance from the Sun
d. Rotational Speed

3. Some planets in our solar system are relatively few impact craters. The reason for this is:
The world has never been bombarded by asteroids and comets
b. Air strikes halted all sizes
c. other geological processes have reduced most of the craters

4. Compare the surface to volume ration of the Moon, Mars and Earth (the surface 4pie R Sqaure and volume (4 / 3) cake cubes st useOne Response to discuss differences in the internal heat in this world

5. 4. May Operating Characteristics important outcome of the series of velocity measurements

6. extrasolarplanets appoint two properties that differ markedly from the planets of our solar system

7. explain the history and fate of water on Mars. For example, there was once water on the surface of the planet? If so, how long will it last? is still there? if not, what happened?