They leave their stoma closed during the day and opened during the night. Hope this helps.
The best answer is b. 4
The human heart has four chambers - two atria and two ventricles.
1. Right atrium - receives oxygen-poor blood from the body and pumps it to the right ventricle.
2. Right ventricle - pumps oxygen-poor blood to the heart.
3. Left atrium - receive oxygen - rich blood from the lungs.
4. Left ventricle - pumps oxygen rich blood to the body.
The heart is a muscular organ. It is about the size of a closed fist. It is located in the thoracic cavity. It is protected by the rib cage and is the major organ of the circulatory system.
Answer:
the digestive system absorbs nutrients from food.
the circulatory distributes these nutrients. this maintains a cycle of balance or homeostasis and keeps glucose levels relatively steady unless you have diabetes
Answer:
Its is only found only in roots
Explanation:
