Hello There!
<u><em>In Mitochondria, the electron transport chain takes place.</em></u>
It mainly depends on the population size and technologies in the environment (Human Interference falls into that) .
The answers are
1. nitrogenous
2. acid-base
3. fluid
A systolic pressure of 112mmhg is a representation of the pressure in arteries during the contraction of the ventricles in the heart. So, C is correct. Systole means contraction while diastole means rest.
