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 :)
An artificial heart has been altered by man in some way. Like if they had a valve replaced it becomes artificial.
<span>sperm and egg cells uniting to produce fertilized eggs</span>
<span><span>absorbed: </span>Became a part of something bigger.<span>affiliated: </span>Allied with, working together.<span>counterparts: </span>Parallels, the same.<span>environmentalism:</span>Advocacy of eco-friendly practices and policies.<span>noninterventionist: </span>One who removes self from participation.<span>third parties: </span><span>Parties in opposition to the two dominant parties.</span></span>
I think the correct answer is "Archaebacteria". The kingdom which is completely composed of unicellular organisms that are prokaryotic is the kingdom of Archaebacteria. There are three major groups in this kingdom called methanogens, halophiles, and thermophiles.