Ascientist is studying an infectious agent in a lab. which observation best illustrates the importance of the theory of evolution in the field of medicine? organisms in petri dish a have a mechanism that produces the same neurotoxin as the rest. organisms in petri dish b have the largest cells relative to the rest. organisms in petri dish c have twice as many genes on their dna. organisms in petri dish d have a mutation that allows them to survive treatment with medication.

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?