What are the sources of phosphorus in the phosphorus cycle

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing

The mixture of sperm and fluids from the seminal vesicles, prostate gland, and cowper's glands is called