Pulmonary vein
Aorta
Pulmonary artery
Vena cava
Answer:
B and D
Explanation:
Since it says all carbon atoms have six electrons, we know that they only have six protons too. The carbon 13 and 14 means they have extra neutrons that increases their atomic mass.
Answer:
A
Have a great day, and I hope this is right!
Answer:
can you tell question in English your launguage I can't understand
The correct answer is indicator species.
