B Water
hope this helped!!!!
The pulmonary veins carry oxygen-rich blood between the lungs and the heart.
It is actually the only vein in the boy that carries oxygenated blood. A clue to answering questions about veins is that veins are blood vessels that carry blood towards the heart while arteries carry blood away from the heart.
Answer:
organs are digestive system, respiratory, circulatory endocrine.
Explanation:
these systems helps to function in our body if the immune system is stronger to fight from diseases.
Answer:
the answer may be optionA..
Due to climate change the biosphere may be negatively effected by CO2 amounts dropping or chemical levels seen as toxic for plants rising preventing agricultural growth