The answer to this question is A
Answer:
The blood vessel from lungs to heart is pulmonary vein which carries oxygenated blood.
Answer:
At one point in Earth's history the mountains were under water
Explanation:
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Answer:
Hypothesis If the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.
Explanation:
Answer: If the temperature increases, then the activity of the lions decreases.
