Answer:
it enter through the ecosystem though the sun and later exists the ecosystem once the organisms in the food chain and the different trophic levels consume as much as they need in order to carry out their natural day-to-day process. Organisms release this energy in the form of heat back into the biosphere. hope this helps :)
Answer:
The benefits to use tissue culture to study medication used for treating cancer cells is to observe to details effects of that medicine invitro.
Explanation:
There are various medicines develop by medical science, maximum of them are highly toxic to both normal cell and cancer cell.The most important think to be kept in mind during studying the effects of medications or drug used to treat cancer is that normal body cells should not be affected by that drug.
To avoid this risk the effect of medication or drugs on cancer cell is studied by using tissue culture technique because if the drug adversely effect the normal cells of the tissue culture system,the cell will die but new cell can be regenerated by using hematopoietic stem cells which is not possible invivo.
Nucleotides are the building blocks of DNA macromolecules
It would be primary since the writer himself is getting the information from a direct source.
