Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Question: The amniotic egg first evolved in what species? Answer: reptiles
Amniotic Egg. The amniotic egg is an important adaptation in fully terrestrial vertebrates. It first evolved in reptiles. The shells of reptile eggs are either hard or leathery.

Question: Oxygenated blood is transported by what system? Answer: circulatory
Oxygenated blood is transported by the circulatory system from lungs to tissues throughout the body.

Question: What is it called when plant roots absorb liquid water and release water vapor into the atmosphere? Answer: transpiration
Liquid water is taken up by plant roots. The plant releases water vapor into the atmosphere. This is transpiration.