I believe the first one but think of the logic int he agreement. You could say 4 and 1 but its not multiple choice.
Answer:
the answer at b says that the structure of the heart at animal x is straight and inbetween the Lungs but at animal y the structure of the heart is slightly tilted to the left
and the answer at c the most efficient blood circulation is at y because the blood is able to flood accordingly and it it well transported in the aorta
Answer:
Here is how to find the answer. Search what each term means then you can figure it out! Just take the right amount of time to do it and you can really learn it!
Explanation:
Answer:
i think its because if one of the models are broken or wrong they have a back up or just try to get better info then the others or just to get extra data.
Explanation:
