What makes the phosphorus cycle different from the carbon cycle?
a. phosphorus is abundant throughout the biosphere, and carbon is not.
b. unlike phosphorus, carbon can only be used once, and then the cycle stops.
c. phosphorus is not abundant in the atmosphere, it comes mostly from the land and ocean.
d. phosphorus relies on phosphorus-fixing bacteria to make it usable by plants.

Which process of living things produces water that enters the water cycle

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?

Three applications for admission to a local university are checked, and it is determined whether each applicant is male or female. the number of sample points in this experiment is