Heat is the transfer of energy. it makes things warmer. some materials allow heat to flow through them more easily than others. which statement is correct about insulators and conductors?
a) both insulators and conductors allow heat to flow easily through them.
b) neither insulators nor conductors allow heat to flow easily through them.
c) insulators allow heat to flow easily and conductors do not allow heat to flow easily.
d) insulators do not allow heat to flow easily and conductors do allow heat to flow easily.

20 point pls brianliest 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?