Enters the left atrium...this is the oxygenated blood from the lungs (pulmonary)
By process of elimination you can find the right answer. We know for a fact that carbon is found in all living organisms. That is why we talk about carbon based life forms. So the first statement cannot be true. You can figure out how many Valence electrons an element has by looking at the group number. The group number of carbon is 4 so the 2nd statement cannot be true. We know that carbon does bond with other elements because it is not a noble gas and therefore must be able to form compounds.
This means the answer must be they can form up to four covalent bonds
Have a lot of mitochondria so that more respiration providing muscles with more energy for muscle contraction
Hope it’s useful
Answer:
lungs i think im almost positive
