Which statement most closely describes how the polio vaccine works?
a) it allows the blood to filter out the disease-causing agent.
eliminate
b) it prevents the disease-causing agent from entering the body.
c) it attacks the disease-causing agent as soon as it enters the body.
d) it triggers the immune system to produce antibodies to fight the disease-causing agent.

20 in the formula no3, what does the subscript 3 mean?

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?

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?