AP BIOLOGY

Detailed explanation-1: -The phosphorus cycle utilizes the processes of erosion, and weathering. Phosphates are used in carbohydrate and glucose storage. The phosphorus cycle utilizes bacteria to breakdown phosphates and make them available for plants.

Detailed explanation-2: -The correct option is B. Excess phosphorus that enters freshwater ecosystems from fertilizer runoff and from sewage does cause excessive algae growth. Fertilizers are added to the soil to enhance plants’ growth. These fertilizers are rich in nitrogen and phosphorus.

Detailed explanation-3: -Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms. Over time, rain and weathering cause rocks to release phosphate ions and other minerals. This inorganic phosphate is then distributed in soils and water. Plants take up inorganic phosphate from the soil.

Detailed explanation-4: -Which of the following is true about the phosphorus cycle? The phosphorus cycle utilizes the processes of erosion, and weathering. What is eutrophication? Fertilizers go into bodies of water and create algae blooms, utilizes oxygen, dies, decomposes, and then continues to use more oxygen.

Detailed explanation-5: -Erosion flushes mineral bound phosphorus out of agricultural soils into wetlands and water bodies, where the excess of nutrients (called eutrophication) harms the aquatic plant and animal communities.