Some examples are alcohol fermentation, lactic acid fermentation and in decomposition of organic matter.
I believe the answer would be d
Answer:
The circulatory system
Explanation:
The heart, veins and arteries works together to service the cells of the body
Answer:
Cell theory refers to the idea that cells are the basic unit of structure in every living thing. Development of this theory during the mid 17th century was made possible by advances in microscopy. This theory is one of the foundations of biology.