Answer: a. dead organisms from the marine food web.
c. liberation through ATP hydrolysis in living organisms.
Upwelling is a wind driven motion of lower bottom nutrient rich and warmer water on the surface of the water body. This wind driven motion facilitates the movement of nutrients available for growth of primary producers like phytoplanktons growing on the surface of water body. The dead organisms from the marine food web get decomposed and the organic matter obtain after decomposition is a rich source of phosphorous. This phosphorous gets transferred to the upper layers of the water body by upwelling. In aquatic organisms ATP hydrolysis occurs which is a catabolic process that uses water to split the bonds present in the ATP molecule and hence, releases energy for functions performed by them along with a release in phosphate atom. This phosphate gets mixed with the water. Therefore, PO32 come from dead organisms from the marine food web and liberation through ATP hydrolysis in living organisms that circulates due to upwelling.
I think the correct answer from the choices listed above would be the second option. In multicell organisms, cells that work together to perform a certain function form <span>Organs. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
Answer:
Our breath being absorbed by the atmosphere and dumped back down in the form of rain or snow
The arrows mean that one eats the other.
Ex. Greenfly eats the lettuce .
The answer is true.
DNA methylation is a process by which methyl groups are added to the DNA, more precisely to its nucleotides adenine or cytosine (they are methylated) via enzymes called DNA methyltransferases. This process as a result can change the activity of a DNA. For example, if DNA of gene promoter is methylated gene transcription is repressed. The opposite process is DNA demethylation.
So, DNA methylation is an epigenetic mechanism meaning that gene activity can be changed and inherited that way, but the sequence of DNA remains the same.
