Explanation : x = 79 marks
The marks scored by Mike on four math test are 88,91,75 and 72.
Average of marks, A = 81
Let in fifth test he scores x marks.
The formula for finding average is :




In the fifth test he scores 79 marks.
Hence, this is the required solution.
The important end product of cellular respiration is ATP.
The waste products of cellular respiration are carbon dioxide and water.
Answer:
A. Duration of individual action potentials in each neuron
Explanation:
The water solution in the environment surrounding the cell has a higher solute concentration than the cell.
Hope this helps!
-Payshence
Oxygen is the primary chemical in the decomposition of organic organisms