The phosphorus cycle involves the lithosphere and the hydrosphere mainly.
The main reservoir of phosphorus the sedimentary rocks in the geosphere.
when these rocks become weathered, phosphate moves to the soil, the lithosphere.
From the soil, phosphates are washed into water bodies, the hydrosphere.
Thus, the cycle of phosphorus involves the lithosphere and the hydrosphere mainly.
More on the phosphorus cycle can be found here: brainly.com/question/656455
Answer:
C
Explanation:
phosphorus is not found in gaseous form and is mainly found as phosphate. it can be found from the breakdown of rocks or decomposition of organisms. so it mainly involves the geosphere and biosphere
Because it is denser (heavier) then hot air
Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Explanation:
The function of villi, small finger-like projections in the intestines, is to allow for more surface area in the small intestines. This way, absorbing nutrients from digested food into the blood would improve greatly. Although they do not help in digestion, they are still important parts of the digestive system.