Because most of the chemical reactions that happen in your metabolism happen in water.
The most common cause is the accuracy of the measurement instruments. And the observation of operator is also an important factor. That's why one measurement should do three times and use the average.
Hope this helps!
-Payshence xoxo
Enzymes are biological catalyst, they are located in several places in the digestive system . hope this helped .
The point at which the optic nerves meet and then split is termed the optic area
Photosynthesis
Plant cells need their chloroplast to make food from the sun through photosynthesis