Help me please with this

1) Identify the most abundant greenhouse gas.

  It seems to be Carbon dioxide in your chart

2) State one human activity that is the source of this gas.

   Try, The gas that the vehicles spew out while moving    (Is it good enough?)

3) State one negative effect of greenhouse gases in the earths atmosphere.

    Too much of any greenhouse gases could lead to our planet warming up or Global Warming.

Just as the saying goes, " Too much of a good thing is a bad thing"

Hope this helped :)

it marks things for degradation via the proteasome. it alters there celluar location.

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.