What triggers the release of secretin from the small intestine?

How do you transfer mrna into codons ? i'm so confused : (

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a