Two students described a part of Earth's middle layer. Bob: The deepest part Joe:
The semi-fluid part

Which part of the middle layer did Bob and Joe describe? (1 point)

a They both described the mesosphere.
b They both described the asthenosphere.
c Bob described the mesosphere and Joe described the asthenosphere.
d Bob described the asthenosphere and Joe described the mesosphere.

The production of cells during mitosis into specialized function is recombination or differentiation

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

Me brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula.5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects.8. describe the planets’ orbits around the sun.9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets.13. what causes the seasons?