Carbon dioxide (CO²) is taken in to start the Calvin Cycle.
Answer:
Your answer is organ systems.
...are originally a result of eukaryotes evolving from prokaryotic ancestors and met a very important increase of complexity.
The correct answer is thrombocytes.
Thrombocytes sometimes called blood platelets are an important compound of the blood. Their main role is to repair damage and prevent excessive damage when an injury occurs. Thee platelets do this by forming blood clots at the site of the injury. Recent studies have shown that these structures also have a role in the defense against parasites.
Answer: blood transfusion
Explaination:a routine medical procedure in which donated blood is provided to you through a narrow tube placed within a vein in your arm
