A cat is walking down a sidewalk and spots a dog in a nearby yard. The cat starts to run in the opposite direction and then quickly climbs a tree. Which of the following changes most accurately describes the movement of the cat? A. change in speed
B. change in distance
C. change in velocity
D. change in motion
(i think i know it, i just wanna be sure i have the right answer)

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.

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?

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome