Answer: Blood plays a very important role before cellular respiration. The blood provides oxygenated blood for the aerobic processes that takes place during cellular respiration. Glycolysis, link reaction, Kreb's Cycle and Electron Transport Chain are all the aerobic process of Cellular respiration that requires oxygen. Without blood aerobic cellular respiration cannot occur as the source of oxygen is blood. The blood provides oxygen before cellular respiration. After cellular respiration the waste materials are carried away by blood only.
Hence, blood plays an important role before cellular respiration.
Glucose is converted into Pyruvate
<span>The influenza pandemic of 1918-1919 killed more people
than the Great War, known today as World War I (WWI), at somewhere between
20 and
40 million people. It has been cited as the most devastating epidemic in
recorded world history. More people
died of influenza in a single year than in four-years of the Black Death
Bubonic Plague from 1347 to 1351. Known as "Spanish Flu" or "La
Grippe" the influenza of 1918-1919 was a global disaster. </span>
It's G, since plants need carbon dioxide to perform photosynthesis
Geology is a branch of natural science that studies rocks, how they form, etc.
This field of study enabled us to know the age of Earth, the different layers that make up earth amongst many other things.
Hope it helped,
BioTeacher101
(If you have any questions, feel free to ask them in the comments)