4. Which change describes a demographic transition?
a. a population moves from a high birthrate and death rate to a high birthrate and low death
rate
b. a population moves from a high birthrate and low death rate to a low birthrate and death
rate
c. a population moves from a low birthrate and death rate to a low birthrate and high death
rate
d. a population moves from a high birthrate and death rate to a low birthrate and low death
rate

Which sequence correctly shows the path of carbon dioxide during repiration?

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?

Based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ?