Yes, i'm at it again. Help please, thank yous :'D 1. Why would cells in some organs be consuming more oxygen than cells in other organs?

Answer is below:

Explanation:

As oxygen molecules diffuse into the cell, they are consumed. But interstitial fluid volume is only a little more than half the intracellular fluid volume. The circulating blood must be brought close to the cells since the systemic organs (tissues) are connected in parallel.

Hope this helps!

the index of refraction of the second medium is higher. i just took the test trust me !

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.