Scientists study rainforests as systems structured in vertical layers, or strata. Rainforest Strata
Overstory (or
up to 50 meters
Emergents)
Canopy
30-40 meters
Under canopy
15-25 meters
Ground layer
0-10 meters
How would a tree falling from the overstory layer MOST immediately affect the surrounding plants in the other three layers?
They would have access to more sunlight and more space.
They would have access to more sunlight but less space.
They would have access to less sunlight and less space.
They would have access to less sunlight but more space.
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substitution is the answer in this case

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.  

what are the options

explanation:

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,