Oxygen moves from the air sacs in your lungs into your blood capillaries because the
concentration of oxygen is higher in the air sacs and lower in the capillary blood. Which
type of transport does this example
represent?

What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination

Donde se encuentra el adn nuclear en un organismo eucariota?

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?