Which of the following statements best explains why the energy_pyramid is narrowest (small) at the top? The diagram below shows an energy pyramid for an aquatic ecosystem.
Top
carnivores
Carnivores
Herbivores
Producers
The organisms at the top of the pyramid have the largest population sizes.
The organisms at the top of the pyramid need only a small amount of energy for their metabolism
The organisms at the top of the pyramid receive only a small fraction of the energy that originally enters
the system
The organisms at the top of the pyramid are the most efficient feeders.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

wait any answer choices plz

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.  

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"