Given a scientific passage and an answer, generate a question for the given answer.

[EX Q]: Passage: Young reptiles, like the baby alligator in Figure below , look like smaller versions of the adults. They don't have a larval stage as most amphibians do. Baby reptiles are able to move and search for food but are at high risk of predation. Adult reptiles rarely provide any care for their offspring once the eggs are laid. The only exceptions are female alligators and crocodiles. They defend their eggs and hatchlings from predators and help them reach the water. Answer: larval stage
[EX A]: What developmental stage do alligators lack that most other amphibians have?

[EX Q]: Passage: The cardiovascular system moves nutrients and other substances throughout the body. Answer: cardiovascular system
[EX A]: Which human body system system moves nutrients and other substances throughout the body?

[EX Q]: Passage: Carbon sequestration captures carbon dioxide as it is emitted by a power plant before it enters the atmosphere. The carbon dioxide is then stored in another form. Carbon is sequestered naturally by forests. Trees take in carbon dioxide for photosynthesis. Artificial methods of sequestering carbon underground are being researched. This is just one of the geoengineering methods that are being researched for reducing carbon dioxide. Answer: carbon sequestration
[EX A]:
What captures carbon dioxide as it is emitted by a power plant before it enters the atmosphere?