2. when people eat foods high in proteins, such as meat, eggs, and cheese, the body breaks down the
proteins into smaller molecules. what is supplied to cells when the body breaks down proteins?
a amino acids
b. nucleic acids
c. phospholipids
d. carbohydrates

What organ systems are working to you cool down after a workout?

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

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?