Because as trials go on scientists discover more information and alter the theories and that is why they are referred to as a "theory" instead of a scientific "law"
This science is called anthropology
Answer: No, because the lysosome and the cell, membrane are needed.
If cells didn't have a membrane, the cell would just melt everywhere. If we didn't have lysosomes, there would be a lot of toxins in the cells.
Hope this helps :)
Answer:
Explanation:
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen. The pulmonary arteries carry the blood that has been pumped from the right side of the heart to the lungs for the oxygenation which is returned back to the left atrium by the pulmonary veins.