I think B is the correct answer. Answer choices C & D are about dolphins, but they do not have anything related to negative effects surrounding human and dolphin interaction. A, on the other hand, may seem like a good choice, but then again, the answer is too vague.
Most likely to be A which is probably an artery which carries blood away from the heart Nd tens to carry oxygen rich blood
the leg doesnt contain aveoli this is found in the lungs so its not B
since its oxygen rich little carbon dioxide will be present in this structure so its not C
this part cant be part of the respiratory system as the respiratory system includes lungs, mouth and etc but not the legs so it cant be D
hope that helps
The answer to your question is
Enzymes help break down carbohydrates, fats, and proteins.
I hope this helps!
Dog dog dog dog dog dog dog dog dog dog dog
Answer:
A=2 B=4 C=3 D=1
Explanation:
Identifying the stages of succession assignment
