There are multiple reasons why and MRI scan as a diagnostic tool can be considered inappropriate. The primary reason other diagnostics are used over MRI is because of cost-effectivity. The MRI scan is considerably more expensive compared to x-rays and CT scans. It would be inappropriate to ask for an MRI when the symptoms point to a simple bone fracture of the leg for example. An x-ray can give you the same amount of information in this regard without the huge cost of an MRI.
Another example would be if the patient is claustrophobic. Taking an MRI scan takes a long time and it would involve inserting the patient in a coffin-like machine. Getting an image would be impossible because the patient would need to hold still for a span of 40 minutes to 1 hour.
Homo erectus<span> evolves in </span>Africa<span>. </span>Homo erectus<span> would bear a striking resemblance to modern humans, but had a brain about 74 percent of the size of modern man. Its forehead is less sloping than that of </span>Homo habilis<span> and the teeth are smaller.
</span>Homo antecessor<span> may be a common ancestor of humans and Neanderthals.</span>]<span> At present estimate, humans have approximately 20,000–25,000 </span>genes<span> and share 99% of their </span>DNA<span> with the now extinct </span>Neanderthal [<span> and 95–99% of their </span>DNA<span> with their closest living evolutionary relative, the </span>chimpanzees.<span> The human variant of the </span>FOXP2<span> gene (linked to the control of speech) has been found to be identical in Neanderthals.
</span>Homo heidelbergensis left footprints<span> in powdery volcanic ash solidified in </span>Italy<span>. </span>Homo heidelbergensis<span> may be a common ancestor of humans and Neanderthals.</span><span> It is morphologically very similar to </span>Homo erectus<span> but </span>Homo heidelbergensis<span> had a larger brain-case, about 93% the size of that of </span>Homo sapiens<span>. The </span>holotype<span> of the species was tall, 1.8 m (6 ft) and more muscular than modern humans.</span>
That is very false. What about physical reactions? yeah. that's false
B.) Denitrification is the answer
Answer:
The largest airway structure is the trachea. This branches into two smaller bronchi, which enter the left and right lung and bifurcate further into smaller bronchioles. The bronchioles give way into the smallest structures of the lung, the tiny grape-like clusters of alveoli.
Explanation:
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