Which of the following scenarios represents the best use of a scientific model?
a. predicting weather patterns
b. studying the result of mixing two chemicals
c. studying the effect of oil spills on plant growth
d. studying the speed of a ball down an inclined plane

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?

Which describes a grizzly bear’s habitat?

Genes that come together with different alleles are heterozygous. homozygous. genotype. segregated.