Match each body to its best description: black hole
?
a collapsed star that does
not let light escape
white dwarf
?
T
a star that has expanded
and cooled
red giant
?
an old, very dense, hot star
that is cooling
nebula
?
may collapse to form a
star

Facilitates growth and change in neurons and the migration of neurons to different sites in the brain

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

80 points pls 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?