phosphorous cycle

Question 1

what are the processes involved in this cyle

Answer 1

-absorption by roots
-decomposition
-sedimentation
-mountain building and weathering

Question 2

what is sedimentation in reference to the phosphorous cycle

Answer 2

phosphorous in orgaisma die and become incorporated into sediments.

Question 3

human impacts on the phosphorous cycle

Answer 3

mining of phosphate rocks -calcium phosphate e.g Guano bird deposits.
-fertilizer use contributes to eutrophication.

Question 4

how to sustainably manage this

Answer 4

biological wastes should be sued as fetilisers.
-crop breeding programmes increasing efficiency of phosphate absorption.